- There is no network on your phone.
- Low signal.
- The phone only searches for the network, but is not connected.
- The signal drops continuously.
- Unable to make a call.
Causes of Oppo A37 network problems
- Your SIM card may be faulty.
- Your network operator may be experiencing problems.
- GSM antenna contacts may be rusty or may be contaminated with dirt.
- The antenna contacts do not fully communicate with the GSM antenna contacts.
- Any coils and capacitors of the antenna network or the Power Amp IC can be faulty.
- The secondary coil antenna may be faulty.
Oppo A37 revolutionary problem solution
- Reboot your Oppo A37 phone and check.
- Remove and reinsert the SIM card to test.
- Switch between different network modes and test.
- Check if another SIM card is working.
- Your SIM card or network operator may be having problems.