# How Many eSIMs Can Your Phone Store and Use at Once? > Storage is generous and simultaneous use is the real limit. What Apple and Google publish, why only one line carries data, and how frequent travellers stack plans. Source: https://viasimo.com/magazine/how-many-esims-can-a-phone-store/ Published: 2026-08-13 Tags: esim-basics, devices, iphone, android, dual-sim --- Modern phones store far more eSIM profiles than most travellers will ever need, and can keep only one or two lines active at once. Apple states on its support pages that iPhone can store eight or more eSIMs while using two phone numbers at the same time, and Google states that Pixel 7 and later can use two eSIM profiles at once. Storage is generous; simultaneous use is the real limit, and only one line carries mobile data at any given moment. For a traveller, this is better news than it sounds. Two active lines is precisely the configuration you want abroad: your home number live for calls and codes, a travel plan carrying data. And generous storage means you can install a plan weeks ahead, keep last year's plan sitting dormant, and stack plans for a multi country trip without any housekeeping. In this guide: - [How many eSIMs can a phone store?](#how-many-esims-can-a-phone-store) - [How many lines can be active at the same time?](#how-many-lines-can-be-active-at-the-same-time) - [Only one line carries data at a time](#only-one-line-carries-data-at-a-time) - [Why storing several profiles is useful](#why-storing-several-profiles-is-useful) - [What happens when you run out of slots](#what-happens-when-you-run-out-of-slots) - [Should you delete an expired profile?](#should-you-delete-an-expired-profile) - [How to check your own phone in a minute](#how-to-check-your-own-phone-in-a-minute) ## How many eSIMs can a phone store? More than you need, on any recent handset. Apple's [dual SIM support page](https://support.apple.com/en-us/109317) states that iPhone can store eight or more eSIMs and use two phone numbers at the same time. Support for eSIM on iPhone begins with the iPhone XS generation, and Apple's [eSIM setup page](https://support.apple.com/en-us/118669) is the authority for how installation works on a given model. On Android the number varies by manufacturer and model rather than following one rule. Google's [Pixel dual SIM page](https://support.google.com/pixelphone/answer/9449293) covers Pixel behaviour, and Samsung publishes its own [Galaxy eSIM compatibility list](https://www.samsung.com/au/support/mobile-devices/esim-compatibility/). The pattern across the Android market is the same as Apple's: storing several profiles is normal, and the interesting limit is how many can run at once. The practical takeaway: do not plan your trip around storage. If you are travelling to four countries and buying four plans, your phone will hold all four. ## How many lines can be active at the same time? Two, on the great majority of current devices. Exactly which two depends on the model. Some phones pair one physical SIM with one eSIM. Others, including recent iPhones and Pixel 7 and later, can run two eSIMs together. Devices sold without a SIM tray at all rely entirely on eSIM profiles, which makes the two active line limit more visible. For travel, two is the number that matters, because the standard setup uses exactly two: - **Line one:** your home number, switched on for calls and texts, with data roaming off. - **Line two:** your travel plan, carrying all the data. That is the configuration our [dual SIM travel setup guide](/magazine/dual-sim-travel-setup-guide/) walks through, and it is what keeps bank codes arriving on your usual number while your data costs come from a prepaid plan instead of your provider's roaming rates. ## Only one line carries data at a time This is the constraint people bump into when they imagine stacking plans. Apple states that iPhone uses one cellular data network at a time, and the same is true across Android. Two lines can be active, both can receive calls and texts, but only one is designated the mobile data line. So a multi country trip does not mean two plans running in parallel. It means two plans installed and one of them selected, with the selection changing when you cross a border. That takes a couple of taps and is the entire mechanic behind our guide to [running a Japan and Korea trip on two plans](/magazine/esim-for-japan-and-south-korea-trip/). One related setting deserves a mention because it can cost money. On iPhone, Allow Cellular Data Switching lets the phone temporarily use the other line's data, which abroad usually means your home line at roaming rates. Turn it off while travelling; our guide to [data roaming settings](/magazine/data-roaming-on-or-off-travel-esim/) covers where it lives. ## Why storing several profiles is useful Generous storage changes how you plan, in four concrete ways. **Install early, activate later.** Because most travel plans start when they first connect in the destination country, you can install weeks ahead over home Wi-Fi and leave the line switched off. Our guide to [activation timing](/magazine/when-to-activate-your-travel-esim/) covers the detail. **Stack a multi country trip.** Install a plan per country before departure and switch the data line as you go, rather than shopping for connectivity in border towns and airports. **Keep a plan that still has validity.** If a plan has days or data left when you fly home, leaving it installed and dormant costs nothing and may save you a purchase on a return trip. **Separate work and personal numbers.** Frequent business travellers often run a work line, a personal line and a travel plan, rotating which two are active. Our [business travel connectivity checklist](/magazine/business-travel-connectivity-checklist/) covers that setup. ## What happens when you run out of slots Rare on a modern phone, and easy to resolve. The symptom is straightforward: the phone declines to add another plan and tells you to remove one first. The fix is to delete a profile you are certain is finished, which frees the slot immediately. Two cautions before you delete anything: - Check the plan is genuinely spent. Our guide to [checking how much data is left](/magazine/check-data-left-on-travel-esim/) covers where to look. - Understand that deletion is generally one way. Many travel plans use an installation code that works only once, so the same code may not reinstall the profile later. If you are moving to a new handset rather than clearing space, that is a different process; our guide to [transferring an eSIM to a new phone](/magazine/how-to-transfer-esim-to-a-new-phone/) covers it, and the answer depends on the plan as much as on the phone. ## Should you delete an expired profile? Usually yes, once you are certain it is finished, and mostly for clarity rather than space. The argument for deleting is that a settings screen listing six similar lines is how people accidentally route data over the wrong one, or spend ten minutes at an airport turning on a plan that expired last year. The argument for keeping is that a plan with remaining validity might be useful, and that deletion cannot generally be undone. A tidy habit that avoids the dilemma: rename every profile the moment you install it. Instead of two identically named lines, you get Home, Japan Oct and Europe Mar, and the right one is obvious at a glance. Our [eSIM transfer guide](/magazine/how-to-transfer-esim-to-a-new-phone/) and our [troubleshooting guide](/magazine/esim-not-working-troubleshooting-guide/) both assume you can tell your lines apart, which is worth an extra ten seconds during setup. ## How to check your own phone in a minute Manufacturer pages are the authority for your exact model, and your own settings screen is the authority for what is currently installed. 1. **On iPhone:** Settings, then Cellular or Mobile Data. Every installed line is listed, with an option to add another. Apple's support pages cover which models handle eSIM and how many lines they run. 2. **On Android:** Settings, then Network and internet, then SIMs. Samsung devices generally place this under Connections, then SIM manager. 3. **Check the manufacturer page for your model**, not a third party list, and note the region your device was sold in. Regional variants of the same model can differ. 4. **Check for a carrier lock**, which can prevent a new profile installing regardless of storage. Our guide to [carrier locks and eSIM](/magazine/carrier-locked-phone-esim-fix/) covers how to tell. If you would rather have the answer without navigating menus, our [device compatibility checker](/device-compatibility/) covers whether a given model supports eSIM at all, and our [model by model list](/magazine/phones-that-support-esim-2026/) covers the current generation. Once you know your phone can hold what you need, plans by country sit on the [destinations page](/destinations/), and [Viasimo](/) delivers each one by email as a one off prepaid purchase.