eSIM Not Working? Fix It in 5 Minutes — Complete Troubleshooting Guide 2026

12 जून 2026

eSIM Not Working? Fix It in 5 Minutes

Your eSIM is installed but you have no service, no data, or it won't activate. Here are the exact fixes that solve 95% of eSIM problems — in order of most common cause.

Quick Fix — Try This First

Go to Settings → Cellular (or Mobile Data) → find your eSIM → make sure it is toggled ON and set as your data line. Most issues are caused by the eSIM being installed but not activated as the data source.

Fix 1 — eSIM is installed but showing no service

Go to Settings → Cellular → your eSIM plan
Make sure Turn On This Line is enabled
Make sure Data Roaming is turned ON (required for international eSIMs)
Set the eSIM as your Primary Data source
Restart your phone

Fix 2 — eSIM not activating after scanning QR code

Make sure you have a WiFi connection during activation
Check that your QR code has not expired (most eSIMs must be activated within 30-90 days)
Try manual activation — most providers including AloOui provide an activation code alongside the QR code
Contact your eSIM provider for a replacement QR if the code shows as already used

Fix 3 — eSIM shows no internet connection

Enable Data Roaming in your cellular settings — this is the most common cause
Check your data balance has not run out
Manually set APN: go to Settings → Cellular → Cellular Data Network → APN and enter the APN provided by your eSIM provider
Try toggling Airplane Mode on and off

Fix 4 — eSIM worked yesterday but stopped working today

Your data plan may have expired or run out of data
The network in your location may have changed — try toggling airplane mode
Go to Settings → General → Transfer or Reset iPhone → Reset Network Settings (this fixes most persistent connection issues)

Fix 5 — eSIM disappeared from settings

eSIMs can occasionally disappear after a software update. Go to Settings → Cellular → Add eSIM. If the eSIM is gone, contact your provider — most can reissue the QR code.

Fix 6 — iPhone specific issues

iOS 16 or earlier: Go to Settings → Cellular → Add Cellular Plan → use the QR code or enter the activation code manually
Dual SIM conflict: Make sure your eSIM is selected as the default data line, not your home SIM
After updating iOS: Sometimes iOS updates reset data roaming settings — re-enable data roaming for your eSIM

Fix 7 — Android specific issues

Go to Settings → Connections → Mobile Networks → Data Roaming → enable it
Check that your eSIM is set as the preferred SIM for mobile data
Some Android devices require you to manually enter the APN — contact your eSIM provider for the correct APN settings