How to Transfer eSIM from iPhone to iPhone Without Losing Your Line

Transferring an eSIM to a new iPhone is not the same job as copying your photos, apps, and settings. Your phone number is a carrier-activated service credential, so the transfer is complete only when the cellular plan activates on the new iPhone. If your carrier supports eSIM Quick Transfer, Apple lets you move an eligible line directly from the old iPhone; if it does not, the correct fallback is carrier activation, a QR code, a carrier app or another carrier-approved method—not deleting the working eSIM and hoping it reappears.

Apple’s current requirements for iPhone-to-iPhone Quick Transfer are straightforward: both devices should be signed in with your Apple Account, the old iPhone must be unlocked with its passcode, the phones must be nearby with Bluetooth on, and both need iOS 18.4 or later. With iOS 26 or later, Apple also supports transferring more than one phone number during new-iPhone setup. The same Quick Transfer path continues to apply on newer iOS releases. See Apple’s current eSIM setup guide.

The transfer has two finish lines: your data and your phone number

Quick Start can make a new iPhone look finished before the cellular handoff is finished. Your apps may be downloading, your photos may already be visible, and your Home Screen may look familiar while the carrier is still activating the line. Treat those as separate migrations.

The useful checkpoint is not “Did my old phone copy?” It is “Can the new iPhone use the transferred line?” Apple says the previous SIM for that line is deactivated when the cellular plan activates on the new iPhone. That sequence matters: activation on the new phone is the handoff event.

For that reason, keep the old iPhone powered on, nearby and unerased until the new phone can place a call and use cellular data. If you use the number for two-factor authentication, banking or work accounts, this also gives you a safer recovery position if carrier activation stalls.

Use Quick Transfer during setup when the line is offered

The cleanest moment to move the line is during initial setup of the new iPhone. When the setup flow offers your phone number or cellular plan, select the line you want to move and follow the approval prompt on the old iPhone.

1. Keep both iPhones nearby and make sure Bluetooth is on.
2. Sign in with the same Apple Account as required by the transfer flow and unlock the old iPhone with its device passcode.
3. When the new iPhone offers a cellular plan, choose the line you want to transfer.
4. Approve the transfer on the old iPhone. If the new iPhone displays a verification code, enter it on the old iPhone when prompted.
5. Wait for the cellular plan to activate on the new iPhone.
6. Test a phone call and cellular data before erasing or trading in the old device.

If you have multiple numbers, iOS 26 or later can transfer more than one phone number during setup. Move deliberately rather than assuming every stored eSIM should become active on the new phone; travel lines, work lines and inactive plans may have different carrier rules.

After setup, the transfer starts on the new iPhone—not the old one

If you skipped cellular setup or finished restoring the phone first, you do not need to erase the new iPhone and start over. Apple’s current path begins on the new iPhone:

1. Open Settings.
2. Tap Cellular.
3. Tap Set Up Cellular or Add eSIM.
4. Choose a cellular plan offered from another iPhone. If no list appears, tap Transfer From Nearby iPhone.
5. On the old iPhone, approve the transfer. Enter the verification code shown by the new iPhone if Apple asks for one.
6. Wait for activation. Do not erase the old phone while the new line is still pending.
7. If the new iPhone shows Finish Setting Up Your Carrier’s Cellular Plan, tap the banner and complete the carrier’s process.

That final carrier banner is not evidence that Quick Transfer “failed.” It means the handoff has reached a carrier-controlled step. Follow that path rather than repeatedly restarting the transfer.

A missing “Transfer From Nearby iPhone” option usually points to eligibility, not broken hardware

Quick Transfer is carrier-dependent. Apple maintains separate lists for carriers that support eSIM Quick Transfer, eSIM Carrier Activation and other eSIM activation methods. In the United States, Apple’s current Quick Transfer list includes major carriers such as AT&T, T-Mobile USA and Verizon Wireless, along with several regional and prepaid providers. The exact list can change, so check Apple’s current carrier page rather than relying on an old carrier roundup.

Even when a carrier supports Quick Transfer generally, a specific account or line can still need carrier involvement. Corporate plans, account restrictions, billing blocks or carrier-side provisioning can change what is offered to a particular user. The absence of the button therefore does not justify resetting network settings or deleting the existing plan.

If the option is missing, check the simple prerequisites first: both phones nearby, Bluetooth on, old phone unlocked, compatible iOS versions and the expected Apple Account state. Then check whether your carrier supports Quick Transfer for the line. If it does not, switch activation method instead of trying to force the iPhone-to-iPhone path.

Carrier Activation, QR codes and apps are alternatives—not inferior transfers

An eSIM is ultimately activated by the carrier. Quick Transfer is convenient because it can complete that carrier handoff without a call, but it is only one supported route.

eSIM Carrier Activation lets a carrier digitally assign the plan to the new iPhone. QR-code activation installs carrier-provided eSIM information. Some carriers use their own app or website, and Apple also supports carrier links and manual eSIM details when the carrier provides them.

If your carrier sends a QR code, use the current instructions from that carrier. On iOS 17.4 or later, Apple also supports adding an eSIM from a compatible QR code shown in a default email app or browser by touching and holding the code and choosing Add eSIM. Do not reuse an old QR code unless the carrier says it remains valid; activation credentials can be one-time or account-specific.

Do not delete the old eSIM as a troubleshooting shortcut

Deleting a working eSIM is not a neutral reset. It can remove the active carrier profile from the phone before you have proved that the replacement line can activate. Re-adding it may require a new carrier activation, QR code or support interaction.

The safer rule is simple: preserve the working line until the new activation process tells you the handoff is complete. If Quick Transfer is unavailable, move sideways to the carrier’s supported activation method. Do not make the problem harder by destroying the only currently working profile.

If activation stalls, diagnose the line before resetting the phone

Apple’s current eSIM troubleshooting guidance uses a short, low-risk sequence. Make sure the new iPhone has Wi-Fi or hotspot access when required and is running the latest iOS version it supports. Then check whether the carrier appears in Control Center. If the line is visible in Settings → Cellular, turn that line off and back on. You can also toggle Airplane Mode and restart the iPhone.

Next, open Settings → General → About and scroll to the eSIM section. Apple says the carrier name and carrier-settings version appear there; tapping the version can surface an available carrier-settings update. Apple also notes that iPhones on iOS 18 or later can use the Apple Support app for additional diagnostics.

If the line still will not activate, stop escalating through unrelated resets and contact the carrier. Apple recommends having the phone number, carrier account PIN or password, exact error message, and the iPhone’s IMEI or EID ready. You can find IMEI and EID under Settings → General → About. See Apple’s eSIM activation troubleshooting steps.

Verify voice, data and messaging separately before you erase the old iPhone

A successful cellular activation proves the carrier line moved, but it does not guarantee every service has finished registering. Test at least one outgoing call and turn off Wi-Fi briefly to confirm cellular data works. If you use two lines, also confirm the intended default voice and cellular-data choices under Settings → Cellular.

Then check Messages. Apple documents a specific edge case on iOS 26: if you did not activate iMessage or the eSIM during initial setup and instead added the eSIM later in Settings, iMessage might not activate automatically for the phone number. Messages can appear as SMS/RCS, show Not Delivered, or originate from your email address instead. In that situation, Apple’s current instruction is Settings → Apps → Messages, then turn iMessage off and back on. Apple notes that phone-number verification can take up to 24 hours in some cases. See Apple’s current iMessage and FaceTime activation guidance.

This is why “I see signal bars” should not be your only pre-trade-in test. Cellular voice, cellular data and phone-number messaging are related but distinct services.

Physical SIM to eSIM can use the same handoff when the carrier supports it

Quick Transfer is not limited to an old iPhone that already uses eSIM. Apple says some carriers also let you transfer a physical SIM from the previous iPhone and activate the number as an eSIM on the new one. That is especially relevant when moving from an older iPhone with a SIM tray to a newer configuration that expects eSIM.

The governing rule is still carrier support. Do not assume that a physical card can always be converted merely because both iPhones support eSIM. If the conversion is not offered, use the carrier’s documented activation path.

Regional hardware rules can change what “transfer” means

eSIM availability is not identical worldwide. Apple’s current documentation, for example, lists specific eSIM-capable models for China mainland and notes different SIM configurations in Hong Kong and Macao. A guide written for a US-market iPhone can therefore be wrong for a phone purchased in another hardware market.

If a transfer option is unexpectedly absent, verify both the carrier and the exact iPhone model/region before treating the missing menu as a software fault. This matters most for imported phones, corporate fleets and travelers moving plans between countries.

The safest transfer ends with proof, not with an erased old phone

An eSIM move is best treated as an activation handoff. Keep the old iPhone intact while the new one requests the line, let the carrier finish activation, and use the new phone’s actual service as the proof that the handoff succeeded.

Once calls, cellular data and your phone-number messaging behave normally, the old device can be erased or traded in with much less risk. If Quick Transfer never appears, that does not mean the process is broken; it means the next useful question is which activation method your carrier supports. Preserving the working line until that question is answered is safer than any reset.