What if there is no signal on the mobile phone?

There is no signal on the mobile phone or the service prompt is not displayed on the screen. Suggestions.

Restart the phone

Try to restart the phone.

Clean SIM card

Turn off the phone, take out the SIM card, and clean the SIM card chip with an eraser.

Change the location with good signal.

It may be that the signal coverage of this location is not good, so you can try another location with good signal.

Change network mode

If Unicom WCDMA mobile phone, please change the network mode. Operation: Settings-More Settings (Wireless and Network)-Mobile Network-Network Mode-Select 2G Network Mode: GSM (or 2G) only.

Replace other SIM cards.

If conditions permit, you can try to replace other SIM cards.

Online update

If the mobile phone supports online upgrade, please go to Settings-About Device (About Mobile Phone)-Software Update (System Update)-Update (Please back up the data in the mobile phone before upgrading).

Restore factory settings

Backup data (contacts, text messages, photos, etc.). ) and restore factory settings (Settings-Reset/Privacy-Restore Factory Settings).