eSIM Not Working on iPhone? How to Fix It, Step by Step

Disclosure: Some links are sponsored. We may earn a commission if you buy a Jetpac or eSimania eSIM through our links, at no extra cost to you. The fixes below come from Apple Support and eSIM providers' own help pages.

Last reviewed: October 19, 2026 by the Smart Savings Guides editorial team. How we research and update articles.

Most iPhone eSIM problems are settings, not a broken eSIM. First check that the eSIM line is turned on, that it's chosen for Cellular Data, and (for a travel eSIM abroad) that Data Roaming is on for that line. If it still won't connect, work through Apple's own fixes: turn Airplane Mode on and off, turn the line off and on, restart, and check for a carrier settings update. Don't delete the eSIM until the provider tells you to, because many travel eSIMs can't be reinstalled.

Before you start: which problem do you have?

Fix 1: make sure the iPhone can take the eSIM

Apple says you need an iPhone XS, XS Max, XR or later, a provider that supports eSIM, and (in most cases) a Wi-Fi connection or hotspot while you set it up. Your iPhone should also run the latest version of iOS it supports. Install a travel eSIM at home on Wi-Fi before you fly; see how to set up a travel eSIM. Not sure your model qualifies? See does my phone support eSIM?

Fix 2: turn the line on

Open Settings, Cellular (Mobile Data in some regions), tap the eSIM and check that Turn On This Line is switched on. Giving each line a clear label, such as "Travel", makes the next steps easier. Apple also suggests that if the number you're trying to use is shown, you turn that line off and back on.

Fix 3: choose the right line for data, and turn on Data Roaming

1. Go to Settings, Cellular, Cellular Data and select the travel line. Apple says you can pick the data line manually here.
2. Tap the travel line and turn on Data Roaming. Travel eSIMs run on partner networks abroad, so your iPhone treats them as roaming. Jetpac's help centre says this is the first thing to check when its eSIM has no data.
3. Leave Data Roaming off on your home line if your carrier charges for roaming. Apple notes that if you keep both lines on, your home line may still incur roaming fees.

On iOS 26 and later, you may see a Turn On Travel eSIM prompt when you land. Apple says you can then choose Travel eSIM Only, or Travel eSIM and Current eSIM, in which case the travel eSIM is used for data. iMessage and FaceTime keep working on your home number either way.

Fix 4: Airplane Mode, then a restart

These are the first steps on Apple's own troubleshooting page. Turn Airplane Mode on, wait a few seconds, and turn it off. Check the status bar in Control Center for a carrier name. If nothing appears, restart the iPhone and check again.

Fix 5: pick a network manually

If the phone can't find a network on its own, tap the travel line in Settings, Cellular, open Network Selection, turn off Automatic and choose a partner network your provider lists for that country. If one network gives signal but no data, try another from the list.

Fix 6: check the APN (only if your provider gives one)

Most travel eSIMs set the APN automatically. If yours didn't, tap the line in Settings, Cellular, open Cellular Data Network and enter the APN exactly as the provider gives it. Jetpac, for example, publishes a table of the APN to use in each country; some providers set this for you, so don't change it unless your provider's instructions say so.

Fix 7: "SIM not supported"? Check the carrier lock

A travel eSIM only works on an unlocked iPhone. Go to Settings, General, About: Apple says an unlocked iPhone shows "No SIM Restrictions" next to Carrier Lock. If it shows anything else, contact the carrier that sold you the phone about unlocking it. A locked phone is the most common problem no eSIM provider can fix for you.

Fix 8: check the plan itself

• Has the plan started? Some activate when installed, others when they first connect abroad.
• Does the plan cover the country you're in, or are you near a border on another country's network?
• Has the data run out, or has the validity period ended? Check in the provider's app.

Not sure how much you'll need next time? See how much data do I need when traveling?

Fix 9: update carrier settings, run diagnostics, then contact support

Apple suggests checking Settings, General, About and tapping the version number next to Carrier in the eSIM section; if an update is available, you'll be prompted to install it. On iOS 18 or later, the Apple Support app can run extra diagnostics. Apple's System Status page shows whether iOS Device Activation is having problems. If it still fails, contact your eSIM provider (or carrier) with:

• the exact error message on screen;
• your iPhone's EID and IMEI (Settings, General, About);
• your order number, iOS version, and the country and networks you've tried.

Don't delete the eSIM (yet)

Removing and reinstalling is tempting, but many travel eSIMs can be installed only once, and deleting the profile can mean buying a new one. Ask the provider first. If you're on the road on Android or need more general fixes, see eSIM not working abroad.

See Jetpac's eSIM plansCompare eSimania's plans

Sponsored links: we may earn a commission if you sign up, buy or are approved, at no extra cost to you. Check current prices and terms on the provider's own site first.

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