Private APN & Enterprise Security: When and Why to Use It

30 Oct 2025

Mobile data isn’t just “internet in your pocket.” For enterprises with roaming staff, payment terminals, or IoT fleets, the path your traffic takes is a security control. A private APN creates a closed data path from SIMs to your network, letting you enforce policy, isolate traffic from the public internet, and integrate cleanly with VPNs or zero-trust tools. This guide explains what private APNs are, when to use them, how they work with VPNs, typical use cases, what they cost, and how to deploy successfully—without jargon.

If your teams travel, the stakes go up: roaming adds new networks, new attack surfaces, and variable policies. A well-designed private APN keeps device traffic predictable and governable across borders. Whether you’re connecting laptops via eSIM, securing field equipment across Esim Western Europe, or building a partner-ready solution via our Partner Hub, the right APN choice determines how easily you can meet audit, compliance, and uptime targets.

Use this as a practical checklist to decide if a private APN fits—and how to keep costs and complexity under control.

What is a Private APN?

A private APN (Access Point Name) is a carrier-side configuration that defines how SIM traffic is handled. Rather than breaking out to the public internet using NAT on a generic, shared APN, a private APN:

Identifies your SIMs into a dedicated routing context
Assigns private/static IP ranges if required
Applies custom firewall, DNS and content policies
Delivers traffic to you over a defined path (e.g., IPsec/GRE to your DC/cloud)

Think of it as “your own lane” inside the mobile core, with enterprise-grade traffic isolation and policy controls.

Key benefits

Traffic isolation: Your devices don’t share a public NAT pool with everyone else.
Predictable addressing: Private or static IPs allow IP allowlisting and system-to-system integrations.
Policy enforcement: Apply DNS filtering, firewall rules, and segmentation per SIM group.
Controlled breakout: Choose where traffic exits—your data centre, cloud VPC, or a regional gateway.

Common variants

Private APN with public breakout: Policy and IP control, but final internet egress is via carrier NAT.
Private APN with private breakout: End-to-end private path to your network over IPsec/GRE/MPLS; no public internet until you decide.
Roaming home routing vs local breakout: Decide whether traffic tunnels back to a home gateway or breaks out regionally for latency/compliance.

When should you use a Private APN?

Choose a private APN when one or more of these apply:

You must IP-allowlist mobile devices to access corporate apps, SCADA, or payment backends.
You need to block open internet access by default, allowing only approved destinations.
You require consistent, auditable logs of device egress and DNS activity.
You deploy IoT/OT fleets where devices are headless and should never be internet-reachable.
You need static or reserved IPs per SIM for device-to-cloud rules or legacy systems.
You’re operating in higher-risk or compliance-heavy sectors (finance, health, critical infrastructure).

Travel scenarios where it shines:

Regional workforces moving between the US, Canada and Mexico using Esim North America
Teams rotating across France, Italy and Spain with Esim France, Esim Italy and Esim Spain
Short-term projects needing fast onboarding in the US via Esim United States

Check your target countries and carriers via Destinations.

Private APN vs VPN vs Zero Trust

These are complementary, not either/or.

Private APN: Carrier-layer isolation and policy. Ensures trusted device identity (SIM/IMSI), private addressing, and controlled gateways.
VPN (IPsec/GRE/SSL): Secure tunnel from APN gateway to your network or cloud VPC. Use to terminate traffic into your security stack.
Zero Trust/SASE: Identity-driven access per user/device/app. Often layered on top (device certificate, posture checks) for user devices.

Recommended patterns

Corporate laptops/phones on the road
Private APN + clientless approach: Route all traffic via your gateway where CASB/SWG runs.
Or Private APN + device VPN: Enforce split tunnel for corporate apps; APN blocks all other internet.
IoT/OT equipment
Private APN with private breakout to your VPC/DC; no public internet access.
Partners/contractors
Private APN with segmented SIM groups and per-segment firewall policies; issue time-bound SIMs.

Pro tips: - Avoid double encryption where unnecessary. If APN-to-cloud IPsec is in place and devices only talk to your internal services, you may not need device-level VPN. - Use device certificates via MDM/EMM for user hardware. The APN identifies the SIM; your MDM identifies the device.

Security controls you actually get

Identity and segmentation
SIM/IMSI-based policies and groups
Optional IMEI binding for device lock
Addressing
Private RFC1918 subnets, with optional static IPs per SIM
CGNAT or 1:1 NAT as needed
Firewalling
Default deny; allow only required FQDNs/IPs/ports
Geo or ASN-based controls for sensitive backends
DNS
Force safe resolvers; block DNS-over-HTTPS egress
Use internal resolver via tunnel for split-horizon domains
Logging and SIEM
Per-SIM flow logs and DNS logs exported to your SIEM
DDoS posture
With private breakout, you decide internet egress; with public breakout, leverage carrier scrubbing

Roaming and travel: what to plan for

Latency vs control
Home routing centralises control but adds RTT from, say, Tokyo to a London gateway.
Regional breakout (e.g., EU vs US gateways) reduces latency for users on Esim Western Europe or Esim North America.
Regulatory constraints
Some countries restrict VPN or enforce local breakout. Match your APN design to the route permitted in the destination. Confirm on Destinations.
IP allowlists and roaming IPs
If you rely on static source IPs, avoid scenarios where roaming uses dynamic CGNAT or changes egress country by country. Private breakout fixes this by presenting consistent IP space.
Device onboarding during travel
eSIM QR provisioning helps. Pre-stage profiles for each region (e.g., Esim France for an EU tour, Esim United States for US trips).

Cost model: what you’ll actually pay

Expect costs in these buckets:

One-off setup
APN configuration, IP ranges, SIM group policies, initial tunnel(s)
Monthly platform fee
Covers APN gateway capacity, monitoring, and management
Per-SIM charge
Often tiered; sometimes includes static IP options
Data usage
Pooled or per-SIM; roaming may have regional rates
Tunnels and hosting
IPsec/GRE tunnel endpoints in your DC/VPC; cloud egress costs may apply
Change management/professional services
Policy updates, incident support, new region gateways

Ways to optimise: - Start with a private APN + public breakout for policy control; add private breakout later for critical apps. - Use regional gateways to avoid transatlantic hairpin data charges for travellers. - Reserve static IPs only for systems that truly need allowlists; use dynamic private IPs elsewhere. - Monitor top talkers; block chatty apps at APN firewall instead of paying for unnecessary data.

Quick decision checklist: do you need a private APN?

Tick “yes” if the statement is true:

We must restrict mobile devices from open internet by default.
We rely on IP allowlists for any critical app or third-party API.
We need device fleet observability (per-SIM traffic and DNS logs).
We operate IoT or unattended devices that should never be publicly reachable.
We have travellers across multiple regions and require consistent egress policies.
We must meet compliance or audit requirements for network segregation.

Three or more “yes” answers usually justify a private APN.

Implementation: step-by-step

1) Define scope and risk - List device types (laptops, phones, IoT), users, and data sensitivity. - Map apps/domains/ports that must be reachable. - Decide “deny-by-default” vs “allow-by-default”.

2) Choose coverage and form factor - Confirm countries and networks via Destinations. - Select regional plans (e.g., Esim North America or Esim Western Europe) and country add-ons (Esim Italy, Esim Spain).

3) Addressing and segmentation - Allocate private subnets per SIM group (e.g., staff vs IoT). - Decide where static IPs are required.

4) Breakout architecture - Start with private APN + public breakout if you only need policy/DNS controls. - For maximum control, deploy private breakout to your DC/cloud via IPsec/GRE. - If latency matters for travellers, request EU and US gateways.

5) Security policy and DNS - Set default deny; allow only business apps/domains. - Enforce DNS to your resolvers; block DoH/DoT egress except approved endpoints. - Add geo/ASN blocks for risky destinations if relevant.

6) Integrate identity and device posture - Bind SIMs to users via MDM/EMM; consider IMEI binding for corporate-owned devices. - For user devices, layer device certificates or ZTNA for application-level control.

7) Build and test tunnels - Establish redundant tunnels; validate failover. - Test roaming from target countries (US/EU) for latency and policy correctness.

8) Logging, monitoring, and alerts - Export flow and DNS logs to SIEM. - Create alerts for policy violations and unusual data volumes.

9) Pilot and scale - Pilot with 10–50 users/devices across two regions. - Iterate rules, then scale to full fleet.

Pro tips: - Test common collaboration apps (Teams/Zoom) for split vs full tunnel to avoid performance complaints. - Document emergency bypass processes for critical field operations.

Common pitfalls (and how to avoid them)

IP allowlists failing during roaming
Use private breakout with consistent source IPs; avoid reliance on roaming CGNAT ranges.
DNS leaks
Force DNS to your resolver; block outbound UDP/TCP 53/853 except to approved IPs; manage DoH with SNI filtering.
Overly broad “allow” rules
Prefer FQDN and minimal port ranges; segment by SIM group.
Latency surprises
Place gateways regionally; verify RTT from your top travel corridors.
Tunnel single points of failure
Always build at least two tunnels to independent endpoints.

Who is this for?

Enterprises securing roaming staff devices with eSIM
Payments, logistics, and field services managing unattended endpoints
MSPs/ISVs embedding connectivity into their solutions via our Partner Hub
Organisations looking for turnkey policies and global eSIM bundles via For Business

FAQ

Q1: What is the main difference between a public and a private APN?
A private APN creates an isolated routing context for your SIMs with custom policies and addressing. Public APNs use shared NAT to the internet with limited control and no dedicated security posture.

Q2: Do I still need a VPN if I use a private APN?
Often yes, but it depends. For IoT or tightly controlled fleets, APN-to-cloud IPsec may be sufficient without device VPN. For user devices, a device VPN or ZTNA provides identity and app-level control on top of the APN.

Q3: Can I get static IPs for my SIMs?
Yes. Private APNs can assign static or reserved private IPs per SIM, which is ideal for IP allowlisting and legacy integrations. Public static IPs are possible but less common; many use private breakout and egress via corporate firewalls.

Q4: Will a private APN work while roaming internationally?
Yes. Design for either home routing (all traffic returns to your gateway) or regional breakout (e.g., EU/US). This affects latency and compliance—verify coverage per country on Destinations.

Q5: How much does a private APN cost?
Expect a setup fee, a monthly APN platform charge, per-SIM pricing (optionally for static IPs), data usage, and tunnel/cloud costs. You can start small with policy-only public breakout, then add private breakout and regional gateways as needs grow.

Q6: Does this support eSIM and multi-region bundles?
Yes. Private APN policies apply to both physical SIMs and eSIMs. For travellers, pair your APN with regional plans like Esim Western Europe or Esim North America and country-specific options such as Esim France or Esim United States.

Next step

Design the right private APN for your fleet and travel patterns. Speak to our enterprise team via For Business to scope coverage, security policies, and rollout.

Read more blogs

Andes Highlights (3 Weeks): Peru–Bolivia–Chile–Argentina Connectivity

Planning a south america itinerary 3 weeks through the high Andes? This route stitches together Peru’s Sacred Valley, Bolivia’s La Paz and Salar de Uyuni, Chile’s Atacama Desert, and northern Argentina’s quebradas or Mendoza wine country—often by long-distance bus and a couple of short flights. Connectivity is different at altitude: coverage is strong in cities but drops in high passes and salt flats; bus Wi‑Fi is patchy; border towns can be blackspots. The smart move is an eSIM with multi‑country coverage, backed by offline maps, offline translations, and a simple routine for crossing borders by bus without losing service. Below you’ll find a practical, connectivity-first itinerary; checklists to prep your phone, apps and documents; and on-the-ground tips for staying online where it matters: booking transport, hailing taxis, backing up photos, and navigating when the signal disappears.If you’re transiting via Europe or North America, you can also add a layover eSIM to stay connected door-to-door. Start with our country list on Destinations, then follow the steps, and you won’t waste time chasing SIM shops at 3,500 metres.The 3‑week Andes route at a glanceWeek 1: Peru (Cusco, Sacred Valley, Machu Picchu) - Fly into Cusco (or Lima then connect). - Base in Cusco; day trips to Pisac/Chinchero/Maras–Moray. - Train to Aguas Calientes; Machu Picchu visit; return to Cusco or continue to Puno/Lake Titicaca.Week 2: Bolivia and Chile (La Paz, Uyuni, San Pedro de Atacama) - Bus/collectivo via Copacabana to La Paz. - Fly or overnight bus to Uyuni. - 3‑day Uyuni–altiplano tour ending in San Pedro de Atacama (Chile).Week 3: Chile and Argentina (Atacama to Salta or Mendoza/Buenos Aires) - Choose: - North: San Pedro to Salta/Jujuy by bus; fly to Buenos Aires. - Or South: San Pedro–Calama flight to Santiago; bus or flight to Mendoza; onward to Buenos Aires.Connectivity notes (quick): - Cities: generally strong 4G/4G+; 5G in major hubs (Santiago, Buenos Aires). - Altitude/rural: expect long no‑signal stretches (Uyuni, altiplano passes, Paso Jama). - Bus Wi‑Fi: often advertised, rarely reliable. Plan to be offline onboard. - Border regions: networks switch; a multi‑country eSIM avoids sudden loss.eSIM vs local SIMs for a 4‑country tripFor a route with multiple borders and remote legs, eSIM wins on time and reliability.What a multi‑country eSIM gets you: - One plan across Peru, Bolivia, Chile, Argentina (check coverage per country on Destinations). - No passport/SIM registration queues at kiosks. - Keep your home number active on the physical SIM for calls/SMS codes. - Instant top‑ups if you burn data on photos or navigation.When a local SIM still helps: - Long stay in one country with heavy data use (e.g., a month in Buenos Aires). - Dead zones where a different local network performs better (rarely worth the hassle on a 3‑week pace).Practical approach: - Use an eSIM as your primary data line across all four countries. - If you find a specific local network far better in one region, add a cheap local SIM and keep the eSIM as backup.Device readiness checklist (before you fly)1) Check eSIM compatibility and SIM‑lock status on your phone.2) Buy and install your eSIM while on home Wi‑Fi. Keep a PDF/printed copy of the QR code.3) Label lines clearly (e.g., “eSIM Andes Data”, “Home SIM”).4) Turn on data roaming for the eSIM; leave roaming off for your home SIM to avoid charges.5) Set up dual‑SIM rules: data on eSIM; calls/SMS default to home SIM if needed.6) Download offline: Google Maps/Organic Maps for all target regions; language packs (Spanish at minimum); bus/air tickets; hotel confirmations.7) Cloud backups: set to upload on Wi‑Fi only; pre‑create shared albums for travel companions.8) Test tethering/hotspot with your laptop/tablet.If you’re transiting popular hubs, consider a short layover eSIM: - USA connections: add an Esim United States or a broader Esim North America.- Europe connections: Madrid/Barcelona? Use an Esim Spain. Paris or Rome? See Esim France and Esim Italy. Multi‑country layovers? Try Esim Western Europe.City‑by‑city connectivity notesCusco & the Sacred Valley (Peru)Coverage: Good in Cusco city; variable in high villages (Maras/Moray) and along Inca Trail approaches.Tips: Download Sacred Valley maps offline; pin viewpoints and ruins. most taxis use WhatsApp—save your accommodation’s number.Machu Picchu/Aguas Calientes: Patchy to none at the citadel. Upload your photos later; don’t rely on live ticket retrieval.Lake Titicaca: Puno and CopacabanaPuno: Reasonable 4G; bus terminals crowded—screenshot QR tickets.Crossing to Copacabana: Expect a signal drop around the border; have directions saved offline.La Paz (Bolivia)Good urban 4G; the cable car network has decent signal but tunnels do not.Yungas/“Death Road” tours: Mountain valleys cause dead zones—share your emergency contacts with the operator, carry a charged power bank, and don’t plan remote calls.Uyuni and the Altiplano (Bolivia to Chile)Uyuni town: OK 4G; ATMs finicky—use Wi‑Fi for banking apps.Salt flats/lagunas: Assume offline for most of the 3‑day tour. Guides often carry satellite phones; agree a pickup time/place in San Pedro and preload your map route.San Pedro de Atacama (Chile)Town: Solid 4G; accommodations often have Wi‑Fi but speeds vary.Geysers, Valle de la Luna: Offline navigation essential; sunrise trips start before mobile networks wake up in some areas.Salta/Jujuy or Mendoza/Buenos Aires (Argentina)Salta/Jujuy: Good city coverage; quebradas have long no‑signal sections.Mendoza: City 4G/5G; vineyards outside town can be patchy.Buenos Aires: Strong 4G/5G; ideal for cloud backups and large downloads before you fly home.Border crossings by bus: step‑by‑stepThe big ones on this route: Peru–Bolivia (Puno/Copacabana), Bolivia–Chile (Uyuni–San Pedro via Hito Cajón), Chile–Argentina (Paso Jama to Salta or Los Libertadores to Mendoza).How to keep service and sanity:1) The day before:- Top up your eSIM data.- Confirm your plan includes both countries you’re entering/leaving.- Download offline maps for both sides of the border and your town of arrival.- Save bus company WhatsApp and terminal address offline.2) On departure morning:- Keep a paper copy or offline PDF of tickets, insurance, and accommodation proof.- Charge phone and power bank; pack a short cable in your daypack.3) On the bus:- Don’t count on bus Wi‑Fi. Keep your eSIM as primary, but expect drops near mountain passes.- If your phone supports it, enable “Wi‑Fi calling” for later when you reach accommodation Wi‑Fi.4) At the border posts:- Data may be unavailable. Keep QR codes and booking numbers offline.- After exiting one country and entering the next, toggle Airplane Mode off/on to re‑register on the new network.- If the eSIM doesn’t attach, manually select a network in Mobile Settings.5) Arrival:- Send your accommodation a quick WhatsApp when you’re back online.- Recheck your eSIM’s data roaming is on; confirm you’re on an in‑country network, not a weak roaming partner.Pro tips: - Dual profiles: If your eSIM allows, keep a secondary profile for a different network in the same country—helpful in border towns.- Cash buffer: Some border terminals don’t accept cards; download a currency converter for offline use.Offline survival kit (5‑minute setup)Maps: Download regions for Cusco, Sacred Valley, Puno, La Paz, Uyuni, San Pedro, Salta/Jujuy or Mendoza, and Buenos Aires.Translations: Download Spanish for offline use; add phrasebook favourites (bus tickets, directions, dietary needs).Documents: Save PDFs of passports, tickets, hotel addresses; star them for quick access.Rides: Screenshots of pickup points; pin bus terminals and hotel doors.Entertainment: Podcasts and playlists for long bus legs, set to download on Wi‑Fi only.Altitude and your tech: what changesCoverage gaps lengthen: Fewer towers at high altitude; valleys can block signal. Assume offline on remote excursions.Batteries drain faster in cold: Keep your phone warm and carry a power bank (10,000–20,000 mAh).Hotel Wi‑Fi may be congested: Schedule big uploads (photo backups, app updates) for big-city stays like Santiago or Buenos Aires.GPS still works offline: Your blue dot shows on offline maps without data—preload everything.Data budgeting for 3 weeksTypical traveller usage across this route: - Messaging/Maps/Bookings: 0.2–0.5 GB/day- Social and photo sharing: 0.3–0.7 GB/day- Occasional video calls/streaming: 0.5–1.0 GB/dayFor a mixed-use trip, plan 15–25 GB for 3 weeks. Heavy creators should double it and upload over hotel Wi‑Fi when possible. If you work remotely, consider a higher‑capacity plan and a backup eSIM; see our guidance on For Business.Practical route with transport and connectivity cuesDays 1–4 Cusco base: Strong city signal; day trips may be spotty—go offline-ready.Days 5–6 Machu Picchu: Expect no service at the ruins; sync tickets ahead.Days 7–8 Puno to La Paz via Copacabana: Border signal drop; re‑register networks after crossing.Days 9–11 Uyuni tour to San Pedro: Treat as offline; charge nightly; carry spare cables.Days 12–14 San Pedro: Stable in town; tours offline; top up data before Paso Jama.Days 15–17 Salta/Jujuy or Mendoza: Good urban 4G; rural patches are offline.Days 18–21 Buenos Aires: Strongest connectivity of the trip; clear your uploads and map downloads for the flight home.Partnering and stopover extrasHospitality and tour operators in the Andes: help your guests stay connected—explore co‑branded solutions via our Partner Hub.Transatlantic flyers: test your eSIM setup on a layover with an Esim United States or Esim Western Europe before hitting high-altitude blackspots.FAQs1) Do I need a local SIM in each country?No. A multi‑country eSIM covering Peru, Bolivia, Chile and Argentina is simpler and works well for a 3‑week pace. Consider a local SIM only if you’ll spend longer in one country and want the absolute best regional coverage.2) Will my WhatsApp number change with an eSIM?No. WhatsApp is tied to your registered number, not your data line. Keep your home SIM active for voice/SMS (roaming off if you wish), and use the eSIM for data—WhatsApp continues as normal.3) Can I hotspot to my laptop or camera?Yes. Enable tethering on your eSIM. Mind your data: cloud backups and OS updates can burn gigabytes—set them to Wi‑Fi only or schedule in big cities.4) What if there’s no signal on the Uyuni/Atacama legs?That’s expected. GPS still works offline. Pre-download maps and translations, carry a power bank, and sync plans with your tour operator before departure.5) Will I get roaming charges at borders?If you’re using a multi‑country eSIM with coverage in both countries, you won’t incur extra roaming fees from your home carrier. Keep roaming off on your home SIM to avoid accidental use.6) I’m connecting via Europe or the US—worth getting a layover eSIM?Yes. It’s an easy way to test your setup and stay reachable. Try Esim North America or country options like Esim Spain, Esim France, or Esim Italy for common hubs.Next step: Browse South America coverage options and build your plan on Destinations.

31 Oct 2025

Mobile Bands by Region: Will Your Phone Work in the USA, Europe, Asia?

Travelling with your own phone is easy—until it isn’t. Mobile networks use different frequency bands in different parts of the world, and your device must support the right ones to get strong 4G/LTE coverage (and voice, via VoLTE) abroad. If you’ve ever landed to “No service” or painfully slow data, band compatibility was likely the culprit. This guide gives you a traveller-first way to check, fast. You’ll find the key LTE bands by region, simple checklists to confirm compatibility, and pro tips to avoid surprises—plus direct links to regional eSIMs so you can be online the moment you land. Use the band tables to see what matters in the USA, Europe and Asia, then run a quick device check before you buy. If you only remember one thing: you don’t need every band, but you do need the right few for where you’re going.Mobile bands 101 (the two-minute refresher)A “band” is a chunk of radio frequency used by mobile networks. LTE bands have numbers (e.g., Band 3, Band 20).Regions deploy different mixes of bands. Your phone must support the local bands to get 4G data and VoLTE calls.FDD vs TDD: Some regions (notably China/India) use TDD bands like 40/41. Many phones support both FDD and TDD, but budget or older models may not.3G/2G shutdowns: The USA has shut down 3G and legacy CDMA. Without VoLTE, calls won’t work. Several countries in Europe/Asia still run 3G, but support is shrinking.5G is great, but 4G/LTE is still the baseline for reliable coverage. Check LTE first; treat 5G as a bonus.Pro tip: “Quad‑band” used to mean 2G/GSM compatibility, not LTE. For modern travel, look for LTE/5G band support, not just GSM.The fast compatibility checklist1) Find your phone’s supported bands - iPhone: Settings > General > About > Legal > Regulatory, then cross-check on Apple’s specs page. - Android: Settings > About phone > Hardware information, then confirm on the manufacturer’s specs page or model datasheet. - Pro tip: Model numbers vary by region. Verify the exact model (e.g., SM‑S91xB vs SM‑S91xU).2) Check the destination’s key LTE bands - Use the regional tables below as a quick filter. - Then confirm your specific country on our Destinations page (with device checker).3) Confirm VoLTE support - USA travel requires VoLTE for calls (3G is off). Ensure your device supports VoLTE and that it’s enabled.4) eSIM and carrier lock - Ensure your phone is carrier‑unlocked and supports eSIM. - Choose a regional eSIM: for example, Esim United States or Esim Western Europe.5) Install and test before you fly - Add the eSIM profile, set the APN (if needed), enable data roaming, and run a speed test on arrival.Pro tips: - You don’t need every band—having the main coverage band(s) plus at least one capacity band usually suffices. - Rural coverage often relies on low‑frequency bands (700/800 MHz like B12/B13/B20/B28). Don’t skip these if you’re leaving big cities.LTE bands by region: what really mattersNorth America (USA and Canada)In the USA, each operator leans on a small set of critical LTE bands. If your device has most of these, you’ll be fine in cities and beyond:BandFrequency (approx.)Where/notes21900 MHz (PCS)All carriers; urban capacity4/661700/2100 MHz (AWS)Core for AT&T, T‑Mobile, Verizon; B66 is an extended AWS5850 MHzAT&T (also some legacy Sprint/T‑Mobile areas)12/17700 MHz (Lower)AT&T/T‑Mobile coverage band13700 MHz (Upper)Verizon’s primary coverage band14700 MHz (FirstNet)AT&T public-safety band; consumer devices increasingly support it251900+ MHzT‑Mobile (ex‑Sprint)26850+ MHzT‑Mobile (ex‑Sprint) coverage supplement41 (TDD)2500 MHzT‑Mobile capacity (ex‑Sprint); strong in many cities71600 MHzT‑Mobile wide‑area/rural coverage3G is shut down. VoLTE is mandatory for calls.For broad USA coverage, aim for Bands 2, 4/66, 5, 12/13, and 71; Band 41 improves capacity in many cities.Canada broadly uses Bands 2, 4/66, 5, 7, 12/13/17 and 29/30 (DL); coverage varies by operator.Plan a US trip with Esim United States or a cross‑border plan via Esim North America.Europe (EU and UK)Europe’s LTE landscape is remarkably consistent. Most countries use a common “core five” plus 700 MHz:BandFrequency (approx.)Where/notes12100 MHzCapacity; widespread31800 MHzCore band across Europe72600 MHzHigh‑capacity urban band8900 MHzCoverage/indoor fill in some networks20800 MHzKey coverage band (rural/suburban); crucial for reach28700 MHzGrowing rapidly; extra coverage and indoor penetration32 (DL)1500 MHz (DL only)Supplemental downlink in pockets (not required)38 (TDD)2600 MHzLimited use in select marketsFor dependable EU/UK coverage: Bands 3, 20 and 28 are the most valuable; Bands 1 and 7 add city capacity.3G still exists in some countries but is being retired. Rely on LTE and VoLTE.Heading to Paris, Rome or Barcelona? Check country specifics and pick a regional plan: - France: Esim France - Italy: Esim Italy - Spain: Esim Spain - Multi‑country trip: Esim Western EuropeAsia–Pacific highlightsAsia is diverse. Use this table to prioritise bands by destination cluster:Country/regionKey LTE bands to haveNotesChina1, 3, 8, 39/40/41 (TDD)Heavy use of TDD (B39/40/41) plus B3/B1; ensure TDD supportJapan1, 3, 8, 11, 18, 19, 21, 28, 41Local bands (11/21) and coverage bands (18/19); broad support on mainstream flagshipsSouth Korea1, 3, 5, 7B3 is central; B1/B5 common; B7 for capacityIndia3, 5, 8, 40, 41 (TDD)B40 is widespread; B3 core; check VoLTE with your deviceSE Asia (SG, MY, TH, ID, VN, PH)1, 3, 5, 7, 8, 28, 40/41Common blend; B28 increasingly used for coverageAustralia/NZ1, 3, 5, 7, 8, 28, 40B28 is vital for regional coverage; B3/B7 for city capacityNotes: - Japan can be picky with VoLTE provisioning. Newer global models fare best. - China/India’s reliance on TDD means budget phones that skip Bands 40/41 may struggle for speed. - Australia/New Zealand prioritise Band 28 for range—crucial if you’re driving outside metro areas.Use our country pages and device checker on Destinations to confirm specifics before buying.Quick examples: what “good enough” looks likeCity‑only USA trip: Bands 2, 4/66 and 12 or 13 will usually carry you; 71 is a bonus for reach.Pan‑Europe rail trip: Bands 3 + 20 (and preferably 28) for near‑universal coverage; 1/7 for faster city data.China/India circuit: Ensure TDD Bands 40/41 in addition to 1/3; without them, expect patchier data or slower speeds.Pro tip: Premium global models (recent iPhone/Pixel/Galaxy flagships) typically include all critical bands for these regions. Mid‑range or region‑specific variants may drop one or two—double‑check.How to set up your phone and eSIM before you fly1) Verify compatibility - Match your phone’s LTE bands to the country’s key bands using this guide and Destinations.2) Pick a regional plan - USA/Canada: Esim North America or country‑specific Esim United States. - Western Europe multi‑city: Esim Western Europe. - Single‑country trips: Esim France, Esim Italy, Esim Spain.3) Install the eSIM - Add via QR or in‑app; label it (e.g., “Trip eSIM”). - Set it as the mobile data line; leave your home line for calls/SMS if needed.4) Enable VoLTE and data roaming - iPhone: Settings > Mobile Data > your eSIM > Voice & Data > enable LTE/VoLTE. - Android: Settings wording varies; ensure 4G preferred and VoLTE toggled on.5) Configure APN if required - Most eSIMs auto‑configure. If speeds are odd, re‑check APN settings provided at purchase.6) On arrival: test quickly - Toggle flight mode off/on, check bars, run a speed test. Move to a window for initial registration if signal is weak.For team or multi‑trip planning, see For Business. Partners and resellers can explore the Partner Hub.FAQsQ: Do I need every local LTE band to get coverage? A: No. Aim for the main coverage band(s) plus at least one capacity band. In Europe that’s typically 20/28 + 3/7; in the USA it’s 12/13/71 + 2/4/66.Q: Will my phone make calls in the USA? A: Only if it supports VoLTE and the carrier recognises your device for VoLTE. 3G is shut down. Ensure VoLTE is enabled and consider mainstream devices for best compatibility.Q: My phone is “GSM unlocked.” Is that enough? A: Not necessarily. “GSM unlocked” doesn’t guarantee LTE band support. Check the specific LTE bands your device supports against the destination’s bands.Q: What about 5G bands—should I care? A: Treat 5G as a bonus. LTE is the baseline for reliable coverage. If your phone matches the key LTE bands, you’ll be fine; 5G adds speed where available.Q: How do I find my phone’s exact bands? A: Check the manufacturer’s specs for your precise model number (e.g., on the retail box or in Settings). Cross‑reference with the tables above or use the device checker on our Destinations page.Q: Will a European phone work in North America (and vice versa)? A: Often yes, but performance varies. Many EU phones lack Band 71 (USA rural) and some USA models lack Band 20 (EU rural). City usage may be fine; rural coverage can suffer.The bottom lineMatch your phone’s LTE bands to where you’re going, prioritise the few that matter, and enable VoLTE. Choose a regional eSIM that fits your itinerary and install it before you fly.Next step: Check your destination and run a quick device compatibility check on our Destinations page, then pick the right plan (e.g., Esim North America or Esim Western Europe) to travel connected.

30 Oct 2025

Best eSIM for International Travel (2025): Simology vs Airalo vs Holafly vs Nomad

Planning data for a multi-country trip shouldn’t be a gamble. The best eSIM for international travel in 2025 blends wide coverage, predictable pricing, and hassle-free switching when a local network gets congested or weak. That’s why our top criterion this year is multi‑network switching: the ability for your eSIM to use more than one carrier in the same country and automatically move to a stronger signal. It’s the biggest reliability upgrade for travellers since eSIMs arrived.In this guide, we compare Simology, Airalo, Holafly, and Nomad against criteria that matter on the road: real-world coverage, speed access (4G/5G), hotspot support, regional roaming, plan flexibility, and support. We’ll flag where each provider fits best, give you practical checklists, and link straight to destination pages so you can price up your route in minutes. If you’re heading to Europe, North America, or a single country like the US, France, Italy or Spain, you’ll find specific plan pointers below and via our Destinations.How we compared (criteria that matter in 2025)Coverage redundancy: Does the eSIM use multiple local networks in-country and switch automatically?Speed access: Consistent 4G/5G access; realistic speeds at peak times; fair use policies.Plan design: Single-country vs regional/global; data allowances; durations; top-ups.Tethering: Hotspot/hotspot limits; restrictions that can trip you up.Transparency: Clear fair-use and throttling; no surprise overages.App and support: Installation, diagnostics, 24/7 help, offline instructions.Price per GB: Value relative to local prepaid and other eSIMs (not just headline “unlimited”).Quick verdictSimology: Best overall for reliability and multi-country trips thanks to multi‑network switching and strong regional bundles. Great balance of speed, flexibility, and support.Airalo: Best for bargain hunters on single-country light/medium data, if you’re okay with typically using one local network per country.Holafly: Best for simple “unlimited”-style plans if you accept fair‑use throttling and hotspot caveats; ideal for heavy daily social/maps use.Nomad: Strong all-rounder with flexible plan sizes and a good app; coverage varies by destination, often single-network per country.Jump to regions: Esim Western Europe | Esim North America | Esim United States | Esim France | Esim Italy | Esim SpainDeep dive: Simology vs Airalo vs Holafly vs NomadSimology — multi‑network reliability and regional freedomWhat stands out - Multi‑network switching in many countries: your eSIM connects to more than one local carrier and can move when signal or capacity drops. This is crucial in rural areas, basements, stadiums, and busy city centres. - 4G/5G where available, with clear fair‑use terms. Hotspot/tethering supported on most plans. - Regional passes that “just work” across borders (great for train trips and road trips). See Esim Western Europe and Esim North America. - Transparent pricing, easy top‑ups, and traveller‑friendly setup. Business features and consolidated billing via For Business.Best for - Travellers prioritising reliability over shaving the last dollar off per‑GB. - Multi‑country itineraries where you want one eSIM to roam across borders without manual switching. - Remote workers who need dependable hotspotting and consistent speeds.Considerations - Absolute rock-bottom pricing may exist on marketplace apps for light users. If you rarely leave a major city and don’t need redundancy, a cheaper single‑network plan might suffice.Helpful links to price up trips: - United States: Esim United States - Europe: Esim Western Europe, or country‑specific pages like Esim France, Esim Italy, Esim Spain - North America multi‑country: Esim North AmericaAiralo — broad marketplace, budget-friendly basicsWhat stands out - Huge catalogue of country eSIMs with varying plan sizes and durations; competitive pricing for light/moderate use. - Simple top‑ups and installation flows in-app.Best for - Single-country trips where you’ll stay mostly in cities and don’t need multi‑network redundancy. - Travellers who want the lowest entry price and are comfortable checking network notes for each country.Considerations - In many destinations, plans connect to a single local network; if coverage dips, you can’t switch. Speeds and 5G access vary by plan and country. - Read tethering terms — most allow hotspot, but not all.Holafly — unlimited-style convenience with trade-offsWhat stands out - “Unlimited data” plans in many countries and regions; good for heavy daily users who value simplicity. - Straightforward installation and support.Best for - Travellers who stream, map, and message heavily and prefer not to manage data balances.Considerations - Unlimited typically involves fair‑use policies that may throttle speeds after sustained high usage; exact thresholds vary by destination. - Hotspot/tethering may be limited or not included on some unlimited plans — check destination specifics before relying on it. - Pricing is higher than metered alternatives for light users.Nomad — flexible plans and a solid appWhat stands out - Good mix of plan sizes and durations, with competitive pricing in several popular destinations. - Smooth app experience and straightforward top‑ups.Best for - Travellers who want a balance between price and simplicity and are comfortable selecting by country.Considerations - Coverage and speed depend on the underlying partner network(s); often single-network per country. Review destination notes for 5G and hotspot support.Which plan should you pick? Real-world scenariosOne country, light data (maps, messages, rides)Airalo or Nomad can be the cheapest route if you’re mostly urban and don’t need redundancy.Prefer reliability across cities and countryside? Choose Simology’s single‑country options, e.g. Esim United States or Esim France, for multi‑network coverage where available.Two to six countries in Europe (train trips, road trips)Use a regional pass to avoid juggling eSIMs. Simology’s Esim Western Europe keeps service live as you cross borders, with multi‑network switching in many countries including Esim Italy and Esim Spain.Heavy user who prefers “unlimited”? Holafly’s Europe options may fit, if you’re fine with fair‑use throttling and potential hotspot limits.US/Canada/Mexico loop or North America business travelGo regional. Simology’s Esim North America covers typical NA routes with multi‑network redundancy in key areas.If visiting only one country and mainly urban, a low‑cost Airalo/Nomad plan may suffice for light users.Remote work and tetheringPrioritise providers that allow hotspot and offer redundancy. Simology plans generally include tethering and multi‑network switching for steadier connections during calls and uploads.Avoid “unlimited” plans where hotspot is restricted if you must tether.Teams and frequent flyersCentralise purchasing and support with Simology For Business and manage destinations across staff via the portal. If you run a travel brand or community, see our Partner Hub.Setup checklist: get it right first timeBefore you fly 1. Check device compatibility: your phone must be eSIM‑capable and network‑unlocked. 2. Pick the right scope: single-country vs regional. If crossing borders, a regional pass reduces admin. 3. Download the provider app on Wi‑Fi; have your QR or installation instructions offline (screenshots work). 4. Know the APN: most eSIMs auto‑configure; if not, note the APN from your plan page. 5. Decide your line settings: keep your physical SIM for calls/SMS if needed; set the eSIM for mobile data.On arrival 1. Toggle on the eSIM line and enable Data Roaming for that line. 2. Set the eSIM as your Mobile Data line (and default for iMessage/FaceTime if desired). 3. Check you’re on 4G/5G. If speeds seem off, toggle airplane mode or manually reselect a network. 4. If prompted, add the APN and restart your device. 5. Test maps/web; then enable hotspot if you plan to tether.Pro tips - Save your boarding pass and eSIM QR offline; airport Wi‑Fi can be patchy. - If you rely on ride‑hailing on arrival, pre-install and test your eSIM before take‑off. - In weak-signal areas, providers with multi‑network switching (e.g., Simology) reduce dead zones and congestion pain. - “Unlimited” isn’t infinite speed: fair‑use can slow you at peak times. If you must upload large files, schedule off‑peak or use Wi‑Fi.Why multi‑network switching mattersFewer dead spots: If Carrier A has a weak cell in a rural valley or crowded station, your eSIM can move to Carrier B.Smoother 5G handoffs: Access to multiple 5G footprints increases the chance of staying on high‑speed data.Real reliability for business use: Hotspotting on calls or pushing large files benefits from redundant routes.Simology prioritises this capability in many destinations and regional bundles, which is why it leads our 2025 pick for the best eSIM for international travel.FAQsWhich eSIM is best for multi‑country trips?Simology’s regional passes like Esim Western Europe and Esim North America are designed for border‑hopping with multi‑network reliability. If you prefer “unlimited”, compare with Holafly but check hotspot and fair‑use details.Is “unlimited data” truly unlimited?Typically not. Most “unlimited” plans apply fair‑use policies that may throttle speeds after sustained heavy use. If you need consistently fast data, consider a high‑allowance metered plan instead of relying on “unlimited.”Will I get 5G everywhere?5G availability depends on the local networks and the plan. Many destinations offer 5G in major cities, with 4G elsewhere. Simology exposes 5G where partners support it; check your specific country page via Destinations.Can I use my phone as a hotspot?Often yes, but not always. Simology plans generally support tethering. Some unlimited‑style plans (e.g., certain Holafly destinations) may restrict it. Check your plan’s terms before relying on hotspot for work.Do I need to complete identity checks (eKYC)?Some countries require ID for mobile service. Many tourist eSIMs avoid this, but regulations can change. If eKYC is required, your provider will prompt you in‑app with simple steps.What if my phone is locked?Network‑locked phones can’t use most travel eSIMs. Contact your carrier to unlock before you fly. You can still use Wi‑Fi only, but mobile data via eSIM requires an unlocked device.The bottom lineIf you want the best eSIM for international travel in 2025, prioritise multi‑network switching, regional coverage, clear hotspot rules, and transparent fair‑use. Simology leads on reliability and cross‑border simplicity, with straightforward options for single countries like the Esim United States and Europe staples (Esim France, Esim Italy, Esim Spain), plus regional passes across Esim Western Europe and Esim North America.Next step: Compare plans and coverage for your route via our Destinations.

30 Oct 2025