Phone network signal lost after update
4.5
The phone shows "No Service" or "Searching" immediately after an OS update.
Symptoms
- No signal
- Call failed
- Data not working
Possible Causes
- Incompatible modem
- APN reset
- Carrier settings bug
Step-by-Step Fix
1
Reset Network Settings
Go to Settings > System > Reset > Reset Network Settings.
2
Toggle Airplane Mode
Forces the modem to reconnect to the tower.
3
Check APN
Ensure your carrier's Access Point Name is correctly set.
When to See a Technician
Updates sometimes include new modem firmware that may not be compatible with your local towers.
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