Dual‑SIM Data Steering: Best Practices for iOS & Android

31 Oct 2025

Travellers often juggle two priorities: staying reachable on their usual number and getting affordable, fast data abroad. Dual‑SIM (physical + eSIM or dual eSIM) makes that easy—if you set it up right. This guide shows you how to control which SIM handles voice, SMS and data, how to avoid accidental roaming charges, and how to keep apps like WhatsApp and banking OTPs working smoothly. We’ll cover iOS and Android step‑by‑step, explain default line rules, and share practical roaming presets you can apply in seconds. You’ll also find app‑specific tips and troubleshooting for common snags.

If you’re new to travel eSIMs, browse country and regional options on Destinations, including ready‑to‑go packs such as Esim United States, Esim France, Esim Italy, Esim Spain, Esim Western Europe and Esim North America. Then use the dual sim data switching best practices below to keep costs down and coverage up.

What “data steering” means on your phone

Dual‑SIM data steering refers to how your device chooses a SIM for internet access, calls and messages, and whether it can switch between SIMs automatically. Key concepts:

Default voice line: which SIM handles outgoing calls by default.
Default SMS line: which SIM sends texts by default.
Default data line: the only SIM that carries mobile data at any one time.
“Allow mobile data switching” (iOS) / “Auto data switch” (Android): optionally lets the phone use the non‑data SIM for data during a call or when signal is poor.
Data roaming per SIM: separate toggles to allow data outside your home network.
Wi‑Fi assist / smart network switch: uses mobile data when Wi‑Fi is weak—useful, but can burn through data if you’re not careful.

Your goal as a traveller is usually to keep your home SIM active for calls/SMS, and use a local/eSIM for data—without letting the phone sneak data onto the wrong SIM.

Quick presets for travellers

Apply these simple presets to avoid bill shock and keep everything working:

Pre‑trip 1. Install and label your travel eSIM. 2. Update apps and download offline maps on Wi‑Fi. 3. Confirm roaming SMS/call rates on your home SIM; disable data roaming on it.
On landing 1. Set the travel eSIM as your default data line. 2. Leave your home SIM as the default for calls and SMS. 3. Turn OFF any auto data switching features to lock data to the travel eSIM. 4. Turn ON data roaming on the travel eSIM only.
While travelling
Keep Wi‑Fi Assist/Smart switch OFF unless you intentionally want mobile data to supplement weak Wi‑Fi.
Use Low Data/Data Saver modes to reduce background usage.
If you need tethering, enable Personal Hotspot on the travel eSIM.
Flying home
Switch default data back to your home SIM.
Turn OFF data roaming on the travel eSIM (or disable the eSIM profile).

iOS: step‑by‑step dual sim data switching

Applies to iPhone XS and newer with Dual SIM (physical + eSIM or dual eSIM).

1) Install and label your eSIM - Settings > Mobile Data > Add eSIM. - Label each plan (e.g., “Home” and “Travel”). Accurate labels reduce mistakes later.

2) Set default voice and SMS lines - Settings > Mobile Data > Default Voice Line: choose “Home”. - Settings > Messages > Send & Receive: ensure your home number is ticked. If you also use your Apple ID email, you can send/receive iMessages without relying on SMS activation.

3) Choose your default data line - Settings > Mobile Data > Mobile Data: select “Travel”. - Mobile Data Options > Data Roaming: ON for Travel; OFF for Home.

4) Control automatic data switching - Settings > Mobile Data > Allow Mobile Data Switching: - OFF if you want to lock data to the Travel eSIM and avoid accidental home‑SIM data. - ON only if you need data continuity during voice calls on the home SIM and you’re comfortable with potential switching. If you enable it, double‑check that data roaming stays OFF on the home SIM.

5) Optimise data usage - Settings > Mobile Data > Mobile Data Options: - Data Mode: Low Data Mode to reduce background tasks. - Voice & Data: 5G Auto or LTE; switch to LTE if 5G is patchy or draining battery. - Settings > Mobile Data > Wi‑Fi Assist: OFF to prevent surprise usage when Wi‑Fi is weak.

6) Hotspot and tethering - Settings > Personal Hotspot: enable if your travel plan supports it. Hotspot uses the current default data line.

7) If data doesn’t work - Check APN: Settings > Mobile Data > your Travel plan > Mobile Data Network. Enter APN provided by your eSIM supplier if not auto‑filled. - Toggle Airplane Mode, then back. - Manually select a network: Settings > Mobile Data > Network Selection (turn off Automatic if needed and try another partner).

Recommended iOS roaming preset - Default Voice Line: Home - SMS/iMessage: Home (plus Apple ID email if you like) - Mobile Data: Travel - Data Roaming: ON (Travel), OFF (Home) - Allow Mobile Data Switching: OFF - Wi‑Fi Assist: OFF - Data Mode: Low Data Mode

Android: step‑by‑step dual sim data switching

Android menus vary. Below are common paths for Google Pixel (stock Android) and Samsung; other brands are similar.

Pixel (Android 13+) 1) Install eSIM - Settings > Network & internet > SIMs > + Add SIM.

2) Labels and defaults - Settings > Network & internet > SIMs: - Calls: set “Home” as preferred for calls. - SMS: set “Home” as preferred for texts. - Mobile data: set “Travel” as preferred.

3) Roaming and switching - Tap each SIM > Roaming: - Travel: ON; Home: OFF. - Look for “Auto data switching” or similar. If present, set OFF to avoid the phone using your home SIM for data.

4) Data controls - Settings > Network & internet > Internet > Data Saver: ON. - Turn off features like “Switch to mobile data automatically” if offered by your OEM.

Samsung (One UI 5+) 1) Install eSIM - Settings > Connections > SIM manager > Add eSIM.

2) Defaults - Settings > Connections > SIM manager: - Preferred SIMs: Calls = Home; Text messages = Home; Mobile data = Travel.

3) Roaming and switching - Tap each SIM > Data roaming: Travel ON; Home OFF. - “Switch data during calls” or “Auto data switch”: set OFF to prevent unintended use of home data. - “Dual SIM always on” handles call reachability via call forwarding; it can add costs and doesn’t affect data. Use only if you understand your operator’s charges.

4) Data controls - Settings > Connections > Data usage > Data saver: ON. - “Switch to mobile data/Wi‑Fi assist” under Wi‑Fi Advanced: consider OFF to avoid surprise usage.

Recommended Android roaming preset - Calls/SMS: Home - Mobile data: Travel - Data roaming: ON (Travel), OFF (Home) - Auto data switching: OFF - Data Saver: ON

App‑specific tips: WhatsApp, OTPs and more

WhatsApp - Your WhatsApp account is tied to your phone number, not the data SIM. You can keep WhatsApp registered to your home number while using data from your travel eSIM. - If WhatsApp needs re‑verification while abroad, you’ll need access to your home number via SMS or voice call. Keep your home SIM active for SMS (data roaming can remain OFF). - Don’t tap “Change Number” unless you truly want to move your account to a new number.

Banking OTPs and 2FA - Many banks send OTPs via SMS to your home number. Keep the home SIM active with data roaming OFF so SMS can still arrive. - If your bank supports app‑based codes or a token, set that up before travel to reduce SMS dependence.

iMessage and FaceTime - iMessage can use your Apple ID email as well as your number. In Settings > Messages > Send & Receive, tick your email to keep iMessage working even if your number can’t re‑activate. - If iMessage/FaceTime tries to re‑activate using SMS, ensure your home SIM can receive SMS.

Android RCS (Chat features) - Google Messages’ RCS is associated with a specific number/SIM. You can keep RCS on your home number while mobile data comes from the travel eSIM—just ensure the home SIM remains active, and RCS is registered before you go.

One‑time passwords from services - Expect some OTPs to arrive via SMS with delays when roaming. Have backup methods (authenticator app, email, or app approval) where available.

Troubleshooting and pro tips

Lock data to the correct SIM: Turn OFF “Allow Mobile Data Switching” (iOS) or “Auto data switch” (Android) during travel.
Check APN settings: If data connects but is slow or drops, verify APN is auto‑filled per your eSIM instructions.
Manually change networks: In some countries, one partner network is faster. Try manual network selection on the travel eSIM.
Prefer LTE when 5G is patchy: Switching to LTE can improve stability and battery life.
Only one data SIM at a time: Dual‑SIM Dual Standby means two lines are active for calls/SMS, but only one can carry mobile data.
Background data control: Use Low Data Mode (iOS) or Data Saver (Android). Consider restricting heavy apps to Wi‑Fi.
Hotspot with care: Tethering uses your default data SIM; verify your plan allows it.
Frequent flyers: Keep a “Travel” profile ready to toggle—data to Travel, data roaming OFF on Home, auto switching OFF.
Regional eSIMs: Multi‑country options like Esim Western Europe or Esim North America reduce mid‑trip SIM shuffling. For single‑country trips, pick Esim United States, Esim France, Esim Italy or Esim Spain.

For teams and frequent travellers

If you manage staff on the road, set a standard preset: home SIM for calls/SMS, travel eSIM for data, roaming OFF on home SIM, and auto data switching disabled. Provide a simple runbook for iOS and Android.

Centralise procurement and control with pooled eSIMs and usage reporting via For Business.
If you’re a reseller or travel partner, explore co‑branded solutions through our Partner Hub.

FAQ

Will changing the data SIM affect my phone number for calls or WhatsApp?
No. Your phone number for calls/SMS stays on the SIM you set for voice. WhatsApp remains tied to the number it was registered with, regardless of which SIM provides data.
Can I receive SMS on my home SIM with data roaming off?
Yes. SMS uses the signalling channel, not mobile data. Keep the home SIM active and data roaming OFF to receive texts without using mobile data.
Should I enable “Allow Mobile Data Switching” on iPhone while abroad?
Usually no. Keep it OFF to prevent accidental data usage on your home SIM. Enable only if you need uninterrupted data during calls and you’re confident your home SIM won’t incur data charges.
My travel eSIM shows signal but no data. What now?
Toggle Airplane Mode, check APN, and ensure Data Roaming is ON for the travel eSIM. Try manual network selection to pick an alternative partner.
Can I hotspot from my travel eSIM and still receive calls on my home number?
Yes. Personal Hotspot uses the current default data line (travel eSIM), while your home SIM remains active for calls and SMS.
Does my phone auto‑switch data to the “better” SIM when signal is poor?
Only if you enable features like “Allow Mobile Data Switching” (iOS) or “Auto data switch” (Android). For cost control while roaming, keep these OFF.

Next step: Pick your destination and get a travel eSIM that fits your trip on Destinations, then apply the presets above before you fly.

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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

Holiday Travel Promo: Family Packs with Shared Data

This holiday season we’re introducing family eSIM deals designed for real-world travel: shared data, simpler management, and clear costs. Our Family Packs let 2–5 travellers share one data pool across multiple eSIM lines in the same region, with per-person caps and pause/resume controls so you never blow the budget. It’s built for parents who want oversight without micro-managing, and for groups who’d rather spend time exploring than hunting for Wi‑Fi.Choose a destination or region, invite your family members, and manage everyone in one place. Pricing scales fairly as you add lines, and top-ups take seconds if you need extra GB. The promo runs through the peak holiday period with flexible activation into early 2026. Coverage spans the most popular destinations including the US, Europe, and North America. Keep your usual number for calls and messages; use the eSIM for fast local data. Read on for dates, pricing examples, set-up steps, and smart parental control tips.What’s included in the Family Pack2–5 eSIM lines under one pack, sharing a single data poolPer-line data caps, usage alerts, and pause/resume controlsRegion-optimised networks with 4G/5G where availableHotspot/tethering supported on most networks (admin can disable)Instant top-ups that apply to the shared poolOne checkout; one receipt; one place to manage the tripPro tip: - Install the eSIMs at home over Wi‑Fi before you fly. Activate data when you land to preserve validity.Promo eligibility and key datesBooking window: 1 November 2025 – 31 January 2026Activation window: activate any time up to 31 March 2026Who qualifies: families or groups travelling together (2–5 lines per pack)Regions: United States, single-country Europe (France, Italy, Spain), Western Europe multi-country, and North America bundlesPayment: major cards and digital walletsFair use: speeds and hotspot support may vary by network and device; coverage depends on local operatorsCheck coverage and supported locations on Destinations.Pricing examples for 2–5 linesThe Family Pack uses a simple model: a region-specific base pack includes data for two lines, then you add extra lines for a small per-line fee. You can top up the shared pool if you need more.Note: All prices are promotional and may vary by tax and currency. Examples assume standard validity windows.United States family eSIM dealsA practical option if you’re road-tripping or visiting multiple cities. See regional details on Esim United States.Base pack (2 lines): 20 GB, 15 days — USD $29Extra line (each, up to 3 more): USD $8Top-up: +10 GB — USD $10Examples: - 2 lines: $29 total (20 GB shared)- 3 lines: $37 total (20 GB shared)- 4 lines: $45 total (20 GB shared)- 5 lines: $53 total (20 GB shared)Need more GB? Add +10 GB for $10 at any time. Top-ups instantly expand the shared pool for everyone.Western Europe multi-countryIdeal for multi-city rail trips. Coverage across popular destinations—see Esim Western Europe.Base pack (2 lines): 30 GB, 14 days — EUR €39Extra line (each, up to 3 more): €9Top-up: +10 GB — €12Examples: - 2 lines: €39 total (30 GB shared)- 3 lines: €48 total (30 GB shared)- 4 lines: €57 total (30 GB shared)- 5 lines: €66 total (30 GB shared)North America (US + Canada + Mexico)Best for cross-border holidays. See coverage notes on Esim North America.Base pack (2 lines): 25 GB, 15 days — USD $39Extra line (each, up to 3 more): $9Top-up: +10 GB — $12Examples: - 2 lines: $39 total (25 GB shared)- 3 lines: $48 total (25 GB shared)- 4 lines: $57 total (25 GB shared)- 5 lines: $66 total (25 GB shared)Single-country Europe (France, Italy, Spain)City breaks or resort stays—single-country simplicity. Learn more: Esim France, Esim Italy, and Esim Spain.Base pack (2 lines): 15 GB, 10 days — EUR €19Extra line (each, up to 3 more): €6Top-up: +5 GB — €6Examples: - 2 lines: €19 total (15 GB shared)- 3 lines: €25 total (15 GB shared)- 4 lines: €31 total (15 GB shared)- 5 lines: €37 total (15 GB shared)Pro tips: - For photo-heavy travellers, start with the higher‑GB region packs or plan for one top-up mid-trip.- If your trip is longer, run back-to-back packs (e.g., two 14‑day Western Europe packs) to keep costs predictable.How shared data worksOne pool for the whole pack: All lines draw from the same GB allowance.Per-line caps: Set a per-person limit so one heavy user can’t drain the pool.Pause/resume: Temporarily pause an individual line (e.g., for bedtime or museum hours).Top-ups: Add GB to the same pool at promo rates, instantly.Validity: Each pack has a fixed validity per region. The clock starts when the first line in the pack activates data on‑network.Rollover: Unused GB do not roll over after expiry.Step-by-step: set up in minutes1) Choose your region- Browse Destinations. Pick the United States, Western Europe, North America, or a single-country pack.2) Build your Family Pack- Select the number of lines (2–5) and validity window. Add any expected top-ups now or later.3) Checkout- Pay once for the whole pack. You’ll receive QR codes and invite links for each member.4) Invite your family- Share each member’s QR code or invite link. They install their eSIM over Wi‑Fi in Settings.5) Activate on arrival- When you land, turn on the new eSIM’s data. The pack validity starts from the first line to go on‑network.6) Set controls- In the pack dashboard, set per-line caps and alerts. Pause a line any time and unpause with one tap.Parental controls that actually helpKeep kids connected for maps and messaging without runaway usage.Admin controls in the Simology pack: - Set a per-line data cap (e.g., 3 GB for each child).- Pause a line temporarily (e.g., at night).- Disable hotspot/tethering for specific lines if needed.- Turn off roaming for a child’s line after you return home.On-device tips: - iPhone (iOS): Settings > Mobile Data > select the travel plan > enable Low Data Mode; use Screen Time to limit high‑usage apps.- Android: Settings > Network & Internet > SIMs > select the travel eSIM > set Data Saver; set data warning/limit under Data usage.- Both: Disable background app refresh for photo backup apps until on hotel Wi‑Fi; keep automatic cloud photo sync off when roaming.Checklist for parents: - Install all eSIMs at home.- Set per-line caps before travel day.- Agree family rules: upload photos on hotel Wi‑Fi; maps/music are fine on cellular.- Show kids how to toggle Wi‑Fi Assist/Smart Network Switch off to avoid accidental cellular use.When to choose a Family Pack vs individual plansChoose a Family Pack when: - 2–5 travellers are on the same itinerary.- You want one shared pool with predictable costs and controls.- You prefer a single checkout and centralised management.Choose individual plans when: - Travellers are splitting up for different countries/lengths of stay.- One person needs significantly more data than the rest (consider a Family Pack plus one high‑GB individual plan).Planning a team offsite or school trip? Our business controls and consolidated billing may fit better—see For Business.Coverage and where it worksUnited States: Nationwide coverage with 4G/5G in major cities. See plan details on Esim United States.Western Europe: Designed for multi-country travel—check supported countries and fair use on Esim Western Europe.North America: US, Canada, Mexico in one pack—see Esim North America.Single-country Europe: Explore specifics for Esim France, Esim Italy, and Esim Spain.For everything else, browse Destinations to match your itinerary.Partners and travel plannersIf you’re a tour operator, creator, or agency wanting to bundle Family Packs into holiday packages, join our Partner Hub for referral tools and co‑branded materials.FAQs1) Which phones work with Family Packs?Any eSIM‑compatible iPhone or Android handset. Most recent iPhones (XS or newer) and many flagship/mid‑range Androids support eSIM. Each traveller needs an unlocked device.2) Can I mix iOS and Android in one pack?Yes. The shared pool and admin controls are platform‑agnostic.3) Can I add a line after purchase?Yes, up to a maximum of five lines per pack. New lines inherit the pack’s remaining validity and shared pool.4) What happens if we run out of data?Data stops when the shared pool reaches zero. Add a top‑up (e.g., +10 GB) in a few taps; it becomes available instantly.5) Do unused GB roll over or can I extend validity?Unused GB do not roll over. To extend your stay, either add another pack or schedule a second pack to start when the first ends.6) Will WhatsApp and iMessage keep my number?Yes. Your phone number stays tied to your primary SIM; the eSIM is for data. Apps like WhatsApp and iMessage continue to use your existing number.The small, useful printSpeeds depend on network conditions, device, and location. 5G is available in select areas.Hotspot is supported on most networks but may vary; you can disable it per line in the admin controls.Per-line caps help manage usage but won’t limit data consumed while a device is offline from reporting; allow a small buffer if you need a strict cap.Taxes may apply in some regions. Prices above show promotional examples and can change during the offer window.Next step: choose your region and build your Family Pack on Destinations.

30 Oct 2025

eSIM Profiles 101: SM‑DP+, LPA, EID & Activation Methods

Travelling with an eSIM should be quick and painless, but the jargon around SM‑DP+, LPA and EID can make activation feel more complex than it really is. This guide demystifies the moving parts so you can install, recover or move your eSIM profile with confidence—whether you’re scanning a QR code at the airport or entering details manually on a long‑haul flight. We’ll compare activation methods (QR vs manual), explain where each code lives and what it does, walk through recovery steps if you delete or change phones, and share tips for transferring your plan to a new device. You’ll also find practical troubleshooting for common activation errors and a traveller‑ready checklist to avoid surprises abroad. If you’re heading to the USA, Europe or beyond, we’ve included links to regional plans so you can choose your coverage and get online fast.The building blocks: SM‑DP+, LPA and EID explainedIf you remember only one line from this article, make it this: the LPA on your phone uses your EID to fetch an eSIM profile from an SM‑DP+ server. That’s the whole “smdp+ eid esim” flow in a nutshell.SM‑DP+ (Subscription Manager – Data Preparation)Think of SM‑DP+ as the secure server where your eSIM profile is prepared and hosted.During manual activation, you enter the SM‑DP+ address and an activation code so your phone knows where to download from and which profile to fetch.This is usually embedded inside the QR code; manual entry is the back‑up when you can’t scan.LPA (Local Profile Assistant)The LPA is the software on your device (within iOS/Android) that manages eSIM tasks: downloading, installing, enabling, disabling and deleting profiles.When you scan a QR or enter details, the LPA talks to the SM‑DP+ server to securely download your profile.EID (eUICC Identifier)The EID uniquely identifies your phone’s eSIM chip (like a serial number for the eUICC).Providers sometimes need your EID to push a profile or to re‑enable a download.Where to find it:iPhone: Settings > General > About > EIDPixel/Android: Settings > About phone > Status (or SIMs/eSIM details) > EIDSamsung: Settings > Connections > SIM manager > eSIM > EIDPro tip: Note your EID before you travel. If something goes wrong mid‑journey, support can help faster.Activation methods compared: QR vs manual vs carrier appMost travellers activate by scanning a QR code, but manual entry of SM‑DP+ + activation code is a robust fallback. Some devices and providers also support app‑based activation.Method 1: QR code (fastest for most travellers)What you need: Stable Wi‑Fi (recommended), the printed/digital QR, and your device unlocked.iPhone (iOS 17+): 1. Settings > Mobile Data/Cellular > Add eSIM 2. Tap Use QR Code and scan 3. Follow prompts to label the line and set default for dataAndroid (Pixel): 1. Settings > Network & Internet > SIMs > + Add SIM > Download a SIM instead 2. Scan the QR and confirmSamsung (One UI 6): 1. Settings > Connections > SIM manager > Add eSIM 2. Scan the QR and installPro tips: - Install over Wi‑Fi before you fly to avoid airport Wi‑Fi congestion. - If the camera refuses to scan, increase screen brightness or use manual entry.Method 2: Manual SM‑DP+ + activation codeWhat you need: The SM‑DP+ server address and an activation code (sometimes a confirmation code too).iPhone: 1. Settings > Mobile Data/Cellular > Add eSIM 2. Tap Enter Details Manually 3. Enter SM‑DP+ address and activation code; add confirmation code if requestedAndroid: 1. Go to Add eSIM (as above) 2. Choose Enter activation code or Enter details manually 3. Enter SM‑DP+ address and activation codePro tips: - If you see “No valid SM‑DP+” check for typos, hidden spaces or dashes. - Keep the activation email/PDF offline. Airplane mode plus Wi‑Fi is fine; you don’t need a physical SIM to install an eSIM.Method 3: Carrier or device appSome providers push profiles directly via their app; iPhone also supports “Convert to eSIM” and “eSIM Quick Transfer”.App‑based activations may not work if your device is region‑locked or the app geo‑restricts downloads.When you can’t scan: manual activation that just worksQR codes package the SM‑DP+ address and activation code into one scannable square. If the code is blurry, printed too small, or you’re viewing it on the same device you’re activating, use manual entry.Checklist for reliable manual activation: - Wi‑Fi connected and stable - Correct SM‑DP+ server address (copy/paste carefully) - Activation code exactly as given (case sensitive in some systems) - If asked for a “confirmation code” or “SMDP+ activation code”, that’s the same field as activation code for many providers - Time/date set automatically on your phone (TLS handshakes can fail if your clock is wrong)If you still can’t download, capture a screenshot of the error and share your EID with support. Most providers can trace the server attempt by EID and time stamp.Recovery after deletion or SIM swap: what to expectDeleting a profile or moving phones doesn’t always mean it’s gone for good. Your options depend on the provider’s policy and whether the plan has already been consumed.Common scenarios and recovery steps: - You deleted the eSIM before travelling: - Many plans can be re‑downloaded to the same device. Contact support with your EID and order reference. - You changed phones: - If the provider supports re‑download to a new EID, they’ll usually ask for the new device’s EID. Some plans are single‑use only. - You reset your phone: - iCloud/Google backups do not include the eSIM profile itself. You’ll need to re‑download or transfer it. - Your QR expired: - Ask for fresh SM‑DP+ credentials. Some providers time‑box activation links.Traveller tip: Don’t delete an eSIM until you’re certain you no longer need it (e.g., number transfer complete, data fully used, or plan expired).Moving your eSIM to a new phoneNot all providers support transfers, but when they do, these are the cleanest paths.iPhone to iPhone: eSIM Quick Transfer (best case)Requirements: iOS 16+, both devices nearby, Bluetooth/Wi‑Fi on, same Apple ID often helps.Steps: 1. On the new iPhone: Settings > Mobile Data/Cellular > Add eSIM 2. Tap Transfer from Nearby iPhone 3. Confirm on the old iPhone and follow promptsIf Quick Transfer isn’t offered, use your original QR/SM‑DP+ details or contact support to re‑provision.Android to Android: device tools varyPixel: Settings > Network & Internet > SIMs > Transfer or Add eSIM (if supported)Samsung: Smart Switch can move eSIM on certain models/regions; otherwise use original QR/manual activation.If transfer isn’t available, ask the provider to re‑enable download for your new EID.Cross‑platform (iPhone ↔ Android)Direct transfer isn’t supported. You’ll need re‑provisioning to the new device’s EID with fresh SM‑DP+ credentials.Before you switch phones: - Screenshot your eSIM details (ICCID, plan label) - Note both EIDs (old and new) - Ensure the plan isn’t mid‑use with roaming critical to your tripDual‑SIM travel setup: do it once, do it rightSet your travel eSIM as the Mobile Data line; keep your home SIM for calls/SMS and multi‑factor codes.iPhone: Settings > Mobile Data > Mobile Data > choose your eSIM; turn on Data Roaming for the eSIM only.Android: Settings > Network & Internet/Connections > SIMs/SIM manager > Mobile data > choose eSIM; enable Data roaming for that line.Keep “Allow Mobile Data Switching” off if you want to avoid your phone silently using your home SIM for data.APN: Most eSIMs auto‑configure. If you have no data, enter the APN from your provider’s instructions and restart.Troubleshooting: fast fixes for common activation errors“Unable to complete cellular plan change”Toggle Airplane mode on/off, reboot, and retry on strong Wi‑Fi.Ensure date/time are automatic.“Activation code invalid”Check for stray spaces; try manual entry.Confirm the code hasn’t already been redeemed or expired.Stuck on “Activating”Switch Wi‑Fi networks (captive portals can block downloads).Try another location; some corporate networks block eSIM traffic.Installed but “No Service”Enable Data Roaming for the eSIM line.Set Network Selection to Automatic.Confirm the plan is valid in your country; if you’re in the USA, see regional options like Esim United States or broader Esim North America.Data works, calls/SMS don’tYour plan may be data‑only by design (common for travel eSIMs).Profile disappeared after update/resetIt wasn’t backed up. Contact support with your EID for re‑provisioning options.Picking the right footprint for your tripChoose coverage to match your route: - Single‑country stays: e.g., Esim France, Esim Italy or Esim Spain - Multi‑country tours: Esim Western Europe simplifies roaming across borders - Transatlantic or cross‑border: Esim North America covers USA/Canada/Mexico - See all regions on DestinationsFor teams on the move, centralised purchasing and fleet management are available via For Business. Travel brands and resellers can explore co‑branded or embedded flows in our Partner Hub.Pre‑trip checklist (5 minutes)Confirm your phone is eSIM‑capable and unlockedSave your SM‑DP+ address, activation code and QR offlineNote your EID and order numberInstall on Wi‑Fi before departure; test data onceLabel your lines clearly (e.g., “Home” and “Trip – EU”)Set your eSIM as the data line; enable Data Roaming for that line onlyFAQQ1: What’s the practical difference between EID and ICCID? - EID identifies your device’s eUICC (the chip); ICCID identifies a specific eSIM profile/plan. Support might ask for both, but EID is essential for pushing or recovering a profile.Q2: Do I need to keep the QR code after activation? - Yes. Keep the QR and SM‑DP+ details until the trip is complete. Some providers allow re‑downloads; others treat the code as single‑use.Q3: Can I store multiple eSIMs and switch between them? - Most modern phones store several profiles (e.g., 5–10). You can enable one eSIM data line at a time, then switch in Settings. Delete only when you’re certain you’re done.Q4: Will eSIM activation work without Wi‑Fi? - It can work on mobile data, but Wi‑Fi is more reliable—especially during initial download. Airports and hotels with captive portals can cause issues; a private hotspot is ideal.Q5: My provider asked for my EID to “push” a profile. Is that safe? - Yes—sharing your EID is standard practice for provisioning. It lets the SM‑DP+ server target your device’s eUICC precisely.Q6: How do QR and manual activation differ from a security standpoint? - They’re equivalent. The QR just bundles the SM‑DP+ address and activation code. Manual entry uses the same secure TLS session via the LPA.Next step: choose your coverage and install ahead of your trip. Browse all regions on Destinations.

30 Oct 2025