Enabling network provider display helps you easily identify the network provider of the SIM card you're using.
Follow these instructions to enable network provider display on Huawei MediaPad T3 7 2017:
Step 1: Go to 'Settings' and select 'Notifications & status bar'

Select 'Notification & Status Bar' option.
Step 2: Turn on 'Display Network Name'.

Switch on the 'Display Network Name' option.
Congratulations! You have successfully completed the setup process. Best of luck to all of you.