You can turn your existing physical SIM into an eSIM without changing your phone number, but only when your phone supports eSIM and your carrier allows the conversion. On some iPhones, Samsung Galaxy phones, and Google Pixels, the option appears directly in Settings. On others, your mobile provider must activate the same line as an eSIM.
The key is to convert your existing line, not purchase a new eSIM plan. Keep the physical SIM in place, connect to Wi-Fi, and make sure you can access your carrier account before beginning.
Check these two things before you start
Does your exact phone support eSIM? On an iPhone, open Settings > General > About and look for an EID. On Samsung, check Settings > Connections > SIM manager for an eSIM option. On a Pixel, check Settings > Network & internet > SIMs. Hardware support varies by model and sales region; the presence of two IMEI numbers alone is not proof of eSIM support.
Will your carrier convert your current plan? A phone may support eSIM while its network does not offer self-service conversion. Prepaid, business, and other account types may have different procedures. Our guide to checking eSIM compatibility explains how to verify the device and carrier separately.
Convert a physical SIM to eSIM on iPhone
Apple offers a built-in conversion option on supported iPhones when the carrier enables it for your line:
- Connect the iPhone to Wi-Fi and leave the physical SIM inserted.
- Open Settings > Cellular. Depending on your region, this may be called Mobile Service or Mobile Data.
- Tap Add eSIM or Set Up Cellular.
- Select the number currently associated with your physical SIM.
- Tap Convert to eSIM, then follow the on-screen confirmation and activation prompts.
- Wait until the eSIM line shows as active. Make a call and test mobile data before taking out the old SIM.
Do not worry if the screen looks a little different from someone else’s iPhone. Apple changes the wording across software versions and regions. What matters is whether your carrier offers the existing-number conversion path, not merely whether the phone displays Add eSIM.
Can’t see Convert to eSIM? That generally means direct conversion is not available for this combination of line, provider, and device. It is not a reason to reset the iPhone. Ask the carrier to move your current number from physical SIM to eSIM using its supported activation process. Apple documents both the built-in method and carrier-assisted alternatives in its iPhone cellular setup guide.
Convert a physical SIM to eSIM on Samsung Galaxy
Some Galaxy models provide a Convert to eSIM command in SIM manager. Check that the device supports eSIM in your region and that your carrier permits the change.
- Open Settings > Connections > SIM manager.
- Choose the physical SIM you want to convert.
- Tap Convert to eSIM, if offered.
- Confirm the request and follow the activation instructions.
- After activation, verify your calls, texts, and mobile data work using the eSIM.
Samsung’s official eSIM instructions confirm that the option depends on the mobile provider. A Galaxy with Add eSIM but no Convert to eSIM may still be able to use an eSIM issued by your carrier. Those are different operations.
Convert a physical SIM to eSIM on Google Pixel
Google documents on-device conversion for Pixel 7 or later, including Pixel Fold models, when the carrier supports the feature.
- Connect the Pixel to Wi-Fi.
- Open Settings > Network & internet > SIMs.
- Select the active physical SIM.
- Scroll down and tap Convert to eSIM.
- Follow the instructions and confirm that the eSIM works after activation.
If the option is missing, check your software updates and ask your carrier whether it supports conversion for your particular Pixel and account. Installing an eSIM through a carrier-issued code is a separate route. See Google’s Pixel conversion instructions for the current requirements.
No Convert to eSIM option? Ask your carrier to switch the line
This is often the more reliable method when the phone supports eSIM but doesn’t show a conversion button.
- Open your provider’s official app or website, or contact its support team. Ask to replace the physical SIM on your existing number with an eSIM.
- Complete account-owner verification. The provider may ask for the phone’s IMEI and EID. Find them in your phone’s About screen, and share them only through the provider’s official channel.
- Follow the instructions you receive: a carrier activation notification, a QR code, an activation link, or a carrier-app setup.
- If you receive a QR code, open Add eSIM on your phone and select the QR-code option. Use the carrier’s actual activation code, not a code found online.
- Wait for activation, then test the number before removing the physical SIM.
For example, Verizon documents physical-SIM-to-eSIM changes through the My Verizon app. Other US and UK providers may use a different app, account page, or verification method. Do not assume that every provider offers the same button or that a QR code can be reused.
What happens to your number and old SIM?
Your phone number normally stays the same when the carrier replaces the SIM type on your existing line. This is not number porting to another company, and it is not the same as adding a second line.
Once the eSIM activates, the old physical SIM stops providing service. That is expected. The eSIM does not automatically move photos, apps, passwords, or every contact saved only on the old SIM card. Make sure your contacts are stored in iCloud, Google Contacts, or another backup before retiring the card.
Keep the physical SIM until you have confirmed an outgoing call, an incoming call, SMS, and mobile data. Some providers may recommend retaining it for a short period for troubleshooting.
Why the conversion might fail
“Convert to eSIM” is missing: Your carrier may not offer self-service conversion, your phone may have a regional limitation, or the account may not be eligible. Verify the exact model and ask the carrier for its activation method.
The eSIM downloads but says No Service: Connect to Wi-Fi, confirm the new line is enabled in SIM settings, and check whether the carrier has finished activating it. Restart once if the provider recommends it. Do not delete the new eSIM as a first troubleshooting step; you may need a replacement code to reinstall it.
Your original SIM has stopped working: This can be normal after a successful conversion. Test the eSIM rather than trying to make both SIMs active on the same phone number.
Calls work but verification texts don’t: Give the carrier time to complete provisioning and confirm that SMS is enabled on the correct line. For iPhones, see our guide to fixing missing verification texts. Some banks and services also apply temporary security delays after SIM changes.
You meant to move the number to another phone: That is a different process. Use our eSIM-to-new-iPhone transfer guide, or the Android-to-iPhone transfer guide if you’re changing platforms.
Questions people ask before switching
Can I convert a physical SIM to eSIM without changing my number?
Yes, when your carrier supports converting or replacing the SIM on your existing line. Make clear that you want to keep the same number and plan.
Can I convert any SIM card to eSIM?
No. Your phone needs eSIM hardware, and your mobile provider must support the conversion or activation. An app cannot turn a phone without eSIM hardware into an eSIM-compatible device.
Do I need Wi-Fi to convert?
Wi-Fi is strongly recommended and is required by some device workflows, including Google’s documented on-device Pixel conversion. It gives the phone an internet connection while the mobile line is being switched.
Will converting my SIM improve signal or speed?
Not by itself. eSIM changes how your carrier subscription is stored, not your phone’s antenna or the coverage provided by the network. Service performance still depends on the phone, plan, local coverage, and carrier configuration.
Before you approve a conversion, confirm that you’re replacing the correct existing line. Once activation finishes and calls, texts, and data work on the eSIM, you can stop relying on the old card without losing your number.
