# Convert a Physical SIM to an eSIM: iPhone and Android > Converting a physical SIM to an eSIM takes a few minutes and keeps your number. Here is the process on iPhone and Android, and when not to do it. Source: https://viasimo.com/magazine/convert-physical-sim-to-esim/ Published: 2026-09-21 Tags: esim-basics, how-to, iphone, android --- Converting a physical SIM to an eSIM takes a few minutes, keeps your number and plan unchanged, and is usually free, because the only thing changing is the form the SIM takes. The subscription itself lives with your carrier and is not touched. This guide covers the in place conversion on iPhone, the carrier route that works everywhere including Android, what to check before you start, and the cases where staying on a plastic SIM is the better call. In this guide: - [What conversion actually changes](#what-conversion-actually-changes) - [Converting on iPhone](#converting-on-iphone) - [Converting on Android](#converting-on-android) - [Before you start](#before-you-start) - [If the conversion fails](#if-the-conversion-fails) - [When not to convert](#when-not-to-convert) - [Using the freed SIM tray](#using-the-freed-sim-tray) - [Filling the second line with a travel plan](#filling-the-second-line-with-a-travel-plan) ## What conversion actually changes A SIM is two things: a subscription record held by your carrier, and a credential stored somewhere in your phone. Conversion moves the credential from a removable card to the [eSIM](/glossary/esim/) chip built into the handset. The subscription record does not move, which is why your number, contract, allowances and bill all continue exactly as before. One real consequence follows. A plastic SIM can be popped out and dropped into another phone in seconds. An [eSIM profile](/glossary/esim-profile/) is tied to the device that installed it, so moving it later means a transfer or a carrier reissue. That is a small cost most people never notice and a genuine annoyance for anyone who swaps handsets weekly. The glossary entry on [eSIM conversion](/glossary/esim-conversion/) covers the terminology carriers use for this. ## Converting on iPhone Recent iPhones can often convert a line in place, with no QR code and no carrier conversation. 1. Go to **Settings, then Cellular** (Mobile Service in some regions). 2. Tap the line using the physical SIM. 3. Look for **Convert to eSIM**. If it appears, tap it and follow the prompts. 4. When the eSIM line is active, **remove the plastic SIM** from the tray and restart. 5. Confirm calls, texts and mobile data all work on the new line. If Convert to eSIM does not appear, your carrier has not enabled it and the route in the next section applies instead. Apple documents the supported flow in its [eSIM setup guide](https://support.apple.com/en-us/118669). Keep the plastic SIM until step five passes. It costs nothing to hold on to and it is your fallback if anything stalls. ## Converting on Android On Android the conversion is normally a carrier operation rather than a phone one. 1. **Check your phone supports eSIM.** Support varies by region and variant rather than by model name, so check the exact model number, using Samsung's [Galaxy eSIM compatibility page](https://www.samsung.com/au/support/mobile-devices/esim-compatibility/) for Galaxy devices and Google's [dual SIM support page](https://support.google.com/pixelphone/answer/9449293) for Pixel. 2. **Request an eSIM for your existing number** from your carrier, through their app where possible. Give them the phone's IMEI and [EID](/glossary/eid/) from Settings, About phone. 3. **Install the QR code they send**, under Settings, Connections, SIM manager, Add eSIM on a Galaxy, or Settings, Network and Internet, SIMs on most other Android phones. Display the code on a laptop, since a phone cannot scan its own screen. 4. **Remove the plastic SIM** once the eSIM line is live, and restart. 5. **Check per line settings**, especially which line carries mobile data and whether [data roaming](/glossary/data-roaming/) is set the way you want. Some carriers complete this instantly in their app; others need a short verification step. Neither changes your plan. ## Before you start Four checks that take two minutes and prevent the common problems. - **Confirm the handset supports eSIM**, using the [device compatibility checker](/device-compatibility/) or the manufacturer pages above. - **Confirm the phone is not carrier locked** if you intend to use other providers later, as covered in [fixing a carrier locked phone](/magazine/carrier-locked-phone-esim-fix/). - **Be on Wi Fi.** Installing a profile needs an internet connection, and during the switch your mobile line may be briefly unavailable. - **Do it when a short gap is fine.** Not while waiting for a verification code, and not at an airport. ## If the conversion fails Three failures cover nearly every stalled conversion, and none of them put your number at risk. **The profile downloads but the line shows no service.** Registration has not completed. Restart the phone, which forces a fresh attempt, and if it persists check whether the carrier has finished deactivating the old plastic SIM on their side. The ordered checks in [the eSIM not provisioned guide](/magazine/esim-not-provisioned-fix/) apply directly. **The Convert to eSIM option is missing on iPhone.** Your carrier has not enabled in place conversion. That is a carrier switch and not something a setting on the phone reveals, so use the request route instead. **The QR code will not install.** The usual causes are a captive portal Wi Fi network intercepting the download, a wrong date and time on the phone, or a code already consumed by an earlier attempt. Move to a network with no sign in page, set date and time to automatic, and ask the carrier to reissue rather than rescanning repeatedly. The full sequence is in [eSIM stuck on activating on iPhone](/magazine/esim-stuck-on-activating-iphone/). In all three cases, keep the plastic SIM until the new line passes a real test. ## When not to convert Conversion is not automatically an upgrade. Three situations where a plastic SIM is genuinely better. - **You swap your SIM between phones often.** A card moves in seconds; an eSIM needs a reissue or a transfer each time. - **You use a phone with unreliable carrier support for eSIM.** If your carrier's eSIM process is slow or store only, the convenience disappears. - **You want a spare that works in any borrowed handset.** A plastic SIM in a wallet is a useful fallback that an eSIM cannot replicate. Our comparison of [eSIM versus physical SIM](/magazine/esim-vs-physical-sim/) weighs both sides, and [when an eSIM is not the right choice](/when-an-esim-isnt-right/) is deliberately honest about the cases against. The trend does point one way, though. Several recent iPhone models ship eSIM only in some markets, with no tray at all, which is covered in [the eSIM only iPhone 17 Air explainer](/magazine/iphone-17-air-esim-only-explained/). If your next phone has no tray, the decision is made for you. ## Using the freed SIM tray The best reason to convert is what the empty tray lets you do next: run two lines at once. On a phone that has both an eSIM chip and a physical tray, converting your home line to eSIM leaves the tray free for a local SIM, and installing a travel eSIM alongside leaves the tray free entirely. Either way you gain a second simultaneous line rather than trading one for another, which is the practical benefit conversion actually buys you. The common arrangement for travellers is a home number on one line and a prepaid travel data plan on the other, with data roaming off for the home line so it can never bill you, and on for the travel plan. Your number stays reachable for calls and bank codes while data runs at local prices. The [dual SIM travel setup guide](/magazine/dual-sim-travel-setup-guide/) covers the exact settings, and [dual SIM](/glossary/dual-sim/) explains the terminology. Once the conversion is done, plans by country are on the [destinations index](/destinations/), and [how to install and activate an eSIM](/magazine/how-to-install-and-activate-an-esim/) covers adding the second line. ## Filling the second line with a travel plan Converting is most worthwhile when you use the capacity it frees, and the everyday use for it is a travel data plan alongside your home number. [Viasimo](/) sells prepaid travel eSIMs for more than 190 destinations with coverage and price shown before you pay. The QR code arrives by email within minutes, installs from your phone's own settings with no app, and the purchase is one off so nothing renews. Being data only is the point here: your converted home line keeps the number and the calls, and the travel plan carries data at local prices instead of roaming rates. Set it up before your next trip from the [destinations index](/destinations/), or go direct to [the USA](/destinations/usa/), [Europe](/destinations/europe/) or [Japan](/destinations/japan/). When you know your destination and your dates, the [eSIM plan picker](/esim/) puts every matching plan and price on one screen. ## Frequently asked questions ### How do I convert a physical SIM to an eSIM? On a recent iPhone you can often convert in place from Settings, Cellular, where a Convert to eSIM option appears next to the physical line if your carrier supports it. On Android and where that option is absent, you request an eSIM from your carrier for the same number, install the profile they send, and then remove the plastic SIM. Either way the number, the plan and the billing stay the same, because the subscription lives with the carrier and only the form of the SIM changes. ### Does converting to an eSIM change my phone number or plan? No. Converting changes the physical form your SIM takes and nothing else, so your number, contract, allowances and billing continue unchanged. This is why the operation is routine for carriers and why it is usually free. What does change is that the line is now tied to the specific device it was installed on, which matters when you next upgrade your phone, since moving an eSIM takes a couple of extra steps compared with moving a plastic card. ### Can I convert a physical SIM to an eSIM on Android? On Android the conversion is normally handled by your carrier rather than by the phone: you request an eSIM for your existing number, they issue a QR code, and you install it under the phone's add eSIM screen before removing the plastic SIM. Some carriers do this instantly in their app, others need a short verification. Check first that your specific model and region variant supports eSIM at all, because Android eSIM support varies by variant rather than by model name. ### Should I convert my physical SIM to an eSIM? Convert if you want to free the SIM tray for a second line, if you travel and want to run a travel data plan alongside your home number, or if your next phone has no SIM tray at all. Stay on plastic if you frequently swap your SIM between handsets, since a physical card moves in seconds and an eSIM needs a reissue each time. The right answer depends on how often you change devices rather than on the technology being better in the abstract. ### What happens to my physical SIM after converting? The plastic SIM is deactivated once the eSIM profile is active, so it stops working and cannot be reused for that line. Keep it until the eSIM is confirmed working, then dispose of it. If the conversion fails partway, the old SIM sometimes continues working until the switch completes, which is exactly why you should not throw it away or cut it up during the process. ### What should I put on the line that converting frees up? The everyday use for the freed capacity is a travel data plan alongside your home number. Viasimo sells prepaid travel eSIMs for more than 190 destinations, delivered by email as a QR code within minutes and installed from your phone's own settings with no app. Your converted home line keeps the number and the calls, and the travel plan carries data at local prices instead of roaming rates, which is the arrangement that saves the money. ### How do I transfer a physical SIM to an eSIM on a new iPhone? On recent iPhones, open Settings, Cellular, tap the line using the physical SIM, and look for Convert to eSIM. If the option appears, follow the prompts and then remove the plastic SIM. If it does not, your carrier has not enabled in place conversion, so request an eSIM for your existing number instead and install the QR code they send. ### How do I convert a physical SIM to an eSIM on Android? On Android the conversion is a carrier operation rather than a phone one: request an eSIM for your existing number, give them the phone's IMEI and EID, then install the QR code they send under the phone's add eSIM screen before removing the plastic SIM. Check first that your exact model and region variant supports eSIM at all.