Phone baseband version unknown
4.5
In Settings > About Phone, the baseband version is listed as "Unknown".
Symptoms
- No signal
- WiFi/BT fail
- Radio off
Possible Causes
- Modem firmware crash
- Corrupt partition
- Hardware failure
Step-by-Step Fix
1
Restart Phone
Often fixes temporary modem initialization errors.
2
Update OS
Ensures you have the latest modem drivers.
3
Flash Modem.bin
Advanced users can flash just the modem firmware via PC.
When to See a Technician
Unknown baseband means the OS cannot communicate with the cellular radio hardware.
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