Whether your eSIM won’t activate, shows “No Service,” or disappeared after an update — these 10 proven fixes work on every eSIM-compatible iPhone from the XS to the iPhone 17.
Quick Answer
So your iPhone’s eSIM decided to stop cooperating. Maybe it happened right after a software update. Maybe it never activated properly in the first place. Or maybe it was working fine yesterday and now you’re staring at “No Service” like it personally betrayed you.
Whatever the situation — you’re not alone, and it’s almost certainly fixable. The vast majority of iPhone eSIM problems are software or settings issues, not hardware failures. A few taps in the right places and you’ll be back online.
We’ve organized these 10 fixes from easiest to most involved. Start at the top and work your way down. Most people find their fix within the first three or four methods.
Which iPhones Support eSIM?
Before we dive into fixes, let’s make sure your iPhone actually supports eSIM. Not every model does, and some regional variants have limitations that no amount of troubleshooting can fix.
First iPhones with eSIM. One eSIM + one nano-SIM.
Full eSIM support. iPhone 13+ supports dual eSIM (two eSIMs active).
US models are eSIM-only (no SIM tray). Stores up to 8 eSIMs.
Latest models. eSIM-only in most regions. Up to 8 stored, 2 active.
Budget-friendly with full eSIM support. One eSIM + one nano-SIM.
Most use dual nano-SIM instead of eSIM. No eSIM chip installed.
Go to Settings → General → About and look for an EID number (32-digit code). If you see it, your iPhone supports eSIM. Alternatively, dial *#06# from the Phone app — an EID field confirms eSIM capability. No EID = no eSIM hardware.
The 10 Fixes: Start Here and Work Down
These fixes are ordered from quickest and easiest to more involved. Most people get their eSIM working within the first 4-5 methods. Only jump to the later fixes if the simple ones don’t solve your problem.
01Toggle Airplane Mode On and Off
This is the classic “turn it off and on again” for cellular connections. When you toggle Airplane mode, it forces your iPhone to completely disconnect from all cellular networks and then re-register fresh. This clears out temporary network glitches, stale connections, and half-registered states that make your eSIM appear broken when it’s really just stuck.
- Open Control Center (swipe down from the top-right corner of your screen).
- Tap the Airplane icon to turn it on — wait a full 10 seconds.
- Tap the Airplane icon again to turn it off.
- Wait 15-20 seconds for your iPhone to reconnect. Check if your carrier name appears in the status bar.
Steps
02Restart Your iPhone (Full Power Cycle)
A full restart does more than Airplane mode — it clears the iPhone’s RAM, reloads all system processes, and reinitializes the cellular radio from scratch. If your eSIM stopped working after an app install, a software update, or just randomly overnight, a simple restart often brings it right back to life. It sounds basic, but Apple’s own support page lists this as a core troubleshooting step for a reason.
- Press and hold the Side button + either Volume button until the power slider appears.
- Slide to power off. Wait for the screen to go completely dark.
- Wait at least 30 seconds (don’t rush this — give the system time to fully shut down).
- Press and hold the Side button until the Apple logo appears.
- Once your iPhone boots up, check if your carrier appears in the status bar and test a call or data connection.
Steps
03Check That Your eSIM Line Is Actually Turned On
This catches more people than you’d think. Your eSIM can be properly installed and fully provisioned by your carrier, but if the line toggle is switched off in your settings, it won’t connect — and your iPhone will just sit there showing “No Service.” This can happen accidentally, after a software update, or if you were messing around with Dual SIM settings.
- Open Settings → Cellular (or Mobile Service on some iOS versions).
- Under “Cellular Plans” or “SIMs,” tap on your eSIM line.
- Make sure “Turn On This Line” is toggled ON (green).
- If you’re using Dual SIM, also check Settings → Cellular → Cellular Data and make sure the correct line is selected for data.
- Toggle the line off, wait 5 seconds, then toggle it back on — this forces a fresh connection.
Steps
04Update iOS and Carrier Settings
Outdated software is the single biggest cause of eSIM activation failures. Every iOS update includes carrier bundles — small configuration files that tell your iPhone how to communicate with specific carriers. If you’re running an older version of iOS, your phone might literally not know how to talk to your carrier’s eSIM system. Apple and carriers regularly push updates specifically to fix eSIM bugs.
- Update iOS: Go to Settings → General → Software Update. If an update is available, download and install it.
- Update carrier settings: Go to Settings → General → About. Wait a few seconds — if a carrier update is available, you’ll see a popup asking you to update. Tap “Update”.
- To check your current carrier version, go to Settings → General → About and look next to “Carrier.” Tap the version number to check for updates.
- After updating, restart your iPhone and check if the eSIM is working.
Steps
05Remove the Physical SIM (If Using Dual SIM)
If you’re using both a physical SIM and an eSIM, they can sometimes conflict with each other — especially when both are trying to connect to the same carrier or when a CDMA carrier is involved. Removing the physical SIM temporarily lets your iPhone focus entirely on the eSIM and can clear up weird interference issues between the two lines.
- Power off your iPhone completely.
- Use a SIM eject tool (or a paperclip) to remove the physical SIM card from the tray.
- Power on your iPhone and wait for it to boot up fully.
- Check if your eSIM connects and works properly on its own.
- If it works, reinsert the physical SIM. If the problem returns, you may have a Dual SIM conflict — contact your carrier to check compatibility.
Steps
If you have a US-model iPhone 14 or later, there’s no physical SIM tray to remove. These models are eSIM-only. Skip this step and move on to Fix #6. If you’re running dual eSIMs, try disabling one by going to Settings → Cellular and toggling off one of the lines.
06Reset Network Settings
This is the big gun that fixes the majority of stubborn eSIM issues. Resetting network settings clears out all your saved Wi-Fi networks and passwords, Bluetooth pairings, VPN configurations, and cellular preferences — then rebuilds them fresh. Your eSIM profile itself stays intact (it won’t be deleted), but all the network connection layers get a clean slate. If something got corrupted during an update or a carrier change, this wipes the slate clean.
- Go to Settings → General → Transfer or Reset iPhone → Reset.
- Tap “Reset Network Settings.”
- Enter your passcode when prompted.
- Your iPhone will restart automatically. This erases all saved Wi-Fi passwords — make sure you know your Wi-Fi password before doing this.
- After reboot, reconnect to Wi-Fi, then check if your eSIM is back online.
Steps
07Manually Select Your Network
Sometimes your iPhone’s automatic network selection gets confused — it might be clinging to a weak signal, selecting the wrong carrier, or failing to register on the correct network entirely. This happens a lot when traveling, after switching carriers, or when your local tower is having issues. Manually selecting the network forces a fresh registration with the carrier you actually want.
- Go to Settings → Cellular → tap your eSIM line → Network Selection.
- Toggle “Automatic” to OFF. Wait for the list of available networks to load (this can take 15-30 seconds).
- Select your carrier from the list (e.g., AT&T, T-Mobile, Verizon).
- Wait for it to connect. If one option doesn’t work, try other available networks from the same carrier.
- Once connected, you can toggle “Automatic” back on for normal operation.
Steps
08Enable Data Roaming (For Travel eSIMs)
If you’re using a travel eSIM or your regular carrier’s eSIM in a different country, there’s a very good chance your eSIM isn’t broken at all — data roaming is just turned off. When roaming is disabled, your eSIM can connect to a network (you might even see signal bars) but won’t pass any data through. This one catches travelers all the time, and it’s the simplest fix on this list.
- Go to Settings → Cellular → tap your eSIM line.
- Toggle “Data Roaming” to ON.
- Important: Only enable roaming on the eSIM you want to use for data. Keep it off on your primary line to avoid unexpected roaming charges.
- Also confirm that your eSIM is selected as the Cellular Data line: Settings → Cellular → Cellular Data → select the eSIM.
Steps
09Delete and Reinstall the eSIM
When everything else fails, sometimes the eSIM profile itself is corrupted or didn’t install correctly in the first place. Deleting it and reinstalling from scratch gives you a completely fresh connection. Think of it like uninstalling and reinstalling an app that’s gone haywire. You’ll need your carrier’s QR code, manual activation details, or their app to reinstall — so make sure you have those ready before you delete anything.
- Go to Settings → Cellular → tap your eSIM plan.
- Scroll down and tap “Delete eSIM” (or “Remove eSIM”). Confirm when prompted.
- Restart your iPhone completely after deletion.
- Reinstall the eSIM using one of these methods:
- QR code: Settings → Cellular → Add eSIM → Use QR Code
- Manual entry: Settings → Cellular → Add eSIM → Use QR Code → Enter Details Manually (type the SM-DP+ address and activation code)
- Carrier app: Open your carrier’s app and follow their eSIM setup process
- If you don’t have your original QR code, contact your carrier to request a new one — they can issue a fresh profile.
Steps
eSIM QR codes are single-use. Once you delete an eSIM, the original QR code won’t work again. You’ll need to get a new QR code from your carrier (via their app, website, or by calling support) or use manual activation details. Don’t delete your eSIM unless you have a way to reinstall it.
10Contact Your Carrier (Let Them Fix It Server-Side)
If you’ve worked through every fix above and your eSIM still isn’t working, the problem is almost certainly on your carrier’s end — not yours. Carriers can re-provision your eSIM, push a brand new eSIM profile to your device, clear stuck activations, complete pending port-in orders, or fix account-level issues that no amount of settings tweaking on your end will solve. When you call, have your account info, EID, and IMEI2 ready to speed things up.
- Your EID: Settings → General → About → scroll to EID (32-digit number)
- Your IMEI2: Settings → General → About → scroll to IMEI2 (this is the eSIM identifier, not IMEI1)
- Your carrier account number and PIN
- The exact error message you’re seeing (screenshot it if possible)
- Call from a different phone since your iPhone’s calling may not work
Steps
Carrier Support Line • Available 7 days a week
Quick Reference: All 10 Fixes at a Glance
Here’s a bird’s-eye view of every fix, how difficult it is, how long it takes, and which symptom it addresses. Use this to jump straight to the fix most likely to solve your specific problem.
| # | Fix | Best For | Difficulty | Time | Erases Data? |
|---|---|---|---|---|---|
| 1 | Toggle Airplane Mode | Random signal drops, “No Service” | Easy | 30 sec | No |
| 2 | Restart iPhone | eSIM stopped working after update | Easy | 1 min | No |
| 3 | Check eSIM Line Toggle | eSIM installed but no connection | Easy | 30 sec | No |
| 4 | Update iOS & Carrier | Activation failures, missing eSIM option | Easy | 5-15 min | No |
| 5 | Remove Physical SIM | Dual SIM conflicts | Medium | 2 min | No |
| 6 | Reset Network Settings | Persistent connection issues | Medium | 2 min | Wi-Fi passwords only |
| 7 | Manual Network Selection | Connected but no data, wrong carrier | Medium | 2 min | No |
| 8 | Enable Data Roaming | Travel eSIM won’t work abroad | Easy | 30 sec | No |
| 9 | Delete & Reinstall eSIM | Corrupted profile, persistent failures | Advanced | 10-15 min | Deletes eSIM profile |
| 10 | Contact Your Carrier | “Contact carrier” errors, provisioning issues | Advanced | 15-30 min | No |
Common eSIM Symptoms → Which Fix to Try First
Not sure where to start? Match your symptom to the most likely fix:
| What You’re Seeing | Try These Fixes First | Why It Happens |
|---|---|---|
| “No Service” in status bar | Fix #1, #3, #6, #7 | Line toggled off, network glitch, or carrier not registered |
| eSIM won’t activate / stuck on “Activating” | Fix #4, #6, #9 | Outdated iOS, weak Wi-Fi during setup, or corrupted profile |
| “Add eSIM” option is missing | Fix #4, check compatibility | iOS too old, incompatible model, or carrier-locked device |
| Signal bars but no data | Fix #8, #3, #7 | Wrong data line selected, roaming off, or wrong network |
| eSIM disappeared after iOS update | Fix #2, #6, #9 | Update corrupted carrier bundle or eSIM profile |
| Calls work but data doesn’t | Fix #3, #8, #7 | Wrong line set for cellular data or roaming disabled |
| “Contact your carrier” error | Fix #10, #9 | Provisioning issue on carrier’s end — needs server-side fix |
| eSIM works intermittently | Fix #1, #2, #5, #6 | SIM conflict, network congestion, or flaky software state |
If you’re running iOS 18 or later, download the Apple Support app from the App Store. Apple added built-in diagnostics that can automatically detect the source of eSIM and cellular issues. It’s free and can identify problems that aren’t obvious from the Settings app alone — things like carrier provisioning errors, network registration failures, and hardware-level SIM faults.
No. On iPhone, resetting network settings keeps your eSIM profile intact. It only erases saved Wi-Fi passwords, Bluetooth pairings, and VPN configurations. However, a full factory reset (Erase All Content and Settings) will delete your eSIM unless you choose the option to keep it. Starting with iOS 17, Apple added the option to preserve your eSIM during a factory reset — just make sure you select “Keep eSIMs” when prompted.
iPhones can store between 5 and 8 eSIM profiles depending on the model. The latest models (iPhone 14 and later) can store up to 8 eSIMs. However, only two eSIMs can be active at the same time on iPhone 13 and newer. On older models like the iPhone XS/XR through iPhone 12, only one eSIM can be active alongside one physical SIM. You can always delete unused eSIM profiles to make room for new ones.
Yes, and Apple’s made it pretty seamless. If your carrier supports eSIM Quick Transfer, the eSIM moves automatically during the iPhone setup process — just hold both phones near each other and follow the prompts. With iOS 26, you can even transfer multiple phone numbers at once. If Quick Transfer isn’t supported by your carrier, you’ll need to contact them to get a new QR code or have them push the eSIM profile to your new device using the new phone’s EID.
iOS updates sometimes overwrite or corrupt the carrier bundles that your iPhone uses to connect to the cellular network. In some cases, the update may reset certain cellular settings, disable data roaming, or change your default data line — all of which make the eSIM appear broken. Usually, a simple restart (Fix #2) or network settings reset (Fix #6) resolves post-update issues. Apple is generally quick to release follow-up patches when major eSIM bugs are reported.
This usually means one of three things: your iPhone model doesn’t have eSIM hardware (check the compatibility section above), your phone was purchased in a region where eSIM is disabled (mainland China, Hong Kong, or Macao models), or your device is carrier-locked and the lock is preventing eSIM activation. Check Settings → General → About for an EID number to confirm hardware support, and check Carrier Lock to see if the device is restricted.
Yes, on iPhone 13 and later models. You can have two eSIMs active simultaneously — one for calls/texts and another for data, or both from different carriers for different purposes. This is great for travelers who want to keep their home carrier for calls while using a local eSIM for cheaper data. Just go to Settings → Cellular to manage which line handles voice, data, and iMessage.
If you’re using an eSIM from the same carrier your iPhone is locked to, it should work fine. But if you want to use an eSIM from a different carrier (like a travel eSIM or switching providers), your iPhone must be unlocked. Check your lock status at Settings → General → About → Carrier Lock. If it says anything other than “No SIM restrictions,” contact your original carrier to request an unlock — it’s typically free if the device is fully paid off.
IMEI (or IMEI1) is the identifier for your iPhone’s physical SIM slot. IMEI2 is specifically tied to the eSIM. When you contact your carrier about eSIM issues, they’ll need your IMEI2, not IMEI1. You can find both by going to Settings → General → About, or by dialing *#06# from the Phone app. You’ll also see your EID there — a separate 32-digit code that identifies the eSIM chip hardware itself.
Last updated March 2026. eSIM features, carrier support, and iOS behaviors may change with software updates. Always verify current details with Apple Support or your carrier. For direct help, call 1-800-901-9878. We’re not affiliated with Apple or any carrier — this guide is created to help you troubleshoot common eSIM issues and get back online.
