- Check the signal bar at the top of the screen to ensure you are in a good network coverage.
- Make a call from your phone to make sure that the network has registered the phone correctly.
- Go to Messaging > New (+) > tap 123 key located at the bottom left, type your own mobile phone number in the dial pad, type a message and then tap send. This will test your phone sending and receiving capabilities in one go.
- Disable the cellular data connection on your phone temporary, go to Settings > cellular (mobile network) and switch Data connection to Off. Whether the issue disappear, enable data connection and change the highest connection speed to 2G in the cellular settings menu.
- If you have Multi-SIM (two SIM cards of the same mobile phone number), note that SMS and MMS can only be received on your assigned “primary” SIM card.
- Check with your service provider that there are no issues with your subscription or SMS settings (Messaging > ... > settings > SMS centre number).
The previous actions usually solve your problem. If it does not help, insert a different operator SIM card to your phone to verify that the phone is working properly.