iPhone 15 Mobile Data Not Working – Quick Network Fix
Restore mobile data with proven troubleshooting steps
Symptoms
- No mobile data even with signal
- LTE/5G not loading apps or websites
- Data works only after restart
- Data drops when switching locations
- Issue started after iOS 26 update
- SIM shows active but no internet
Common Causes
- Carrier settings corruption
- iOS 26 network bugs
- Weak 5G coverage
- Incorrect APN settings
- Data mode set too low
- SIM card issues
Quick Fixes
- 1.
Toggle Airplane Mode
Settings → Airplane Mode → On → Off. Resets cellular connection.
- 2.
Restart the Device
Fixes temporary network registration issues.
- 3.
Turn Off 5G
Settings → Cellular → Voice & Data → LTE. Weak 5G causes data dropouts.
- 4.
Check Data Mode
Settings → Cellular → Cellular Data Options → Data Mode → Standard.
- 5.
Remove and Reinsert SIM
Fixes SIM registration issues.
Advanced Solutions
- 1.
Reset Network Settings
Fixes corrupted carrier and APN profiles.
- 2.
Update Carrier Settings
Settings → General → About → Install if prompted.
- 3.
Update to Latest iOS
Later iOS 26 builds fix mobile data bugs.
- 4.
Disable VPN
VPNs often block mobile data.
- 5.
Contact Carrier
Ask them to refresh your line or re-provision data.
FAQ
Why does data drop when switching towers?
Weak 5G or congested towers cause handoff issues. Switch to LTE for stability.
Is this a hardware issue?
Rare — usually software or carrier related. Test with another SIM to confirm.
Does resetting network settings erase data?
No, it only resets Wi-Fi passwords and network preferences. No files are deleted.
Why does Low Data Mode slow everything down?
Low Data Mode intentionally reduces video quality and background app refresh to save data.