Problem:

The signal bar of the mobile phone shows that only emergency calls can be made, but common calls can still be made.

Cause:

This issue occurs due to the improper display on the mobile phone.

Solution:

1. Restart your mobile phone.
2. Insert the SIM card again or replace the SIM card slot and try again.
3. Back up your data and restore your device to its factory settings.

If the issue persists, back up your data and take your device and proof of purchase to an authorized Huawei Customer Service Center for assistance.