When the screen turns off, mobile data will automatically turn off to save more battery.
Steps to disable mobile data when the screen turns off on Xiaomi Redmi 5A are as follows:
Step 1: Go to Battery settings.

Step 2: Access the settings menu.

Step 3: Disable mobile data usage.

Step 4: Set the time for automatic mobile network shutdown upon device locking.

Congratulations on completing the setup! Best wishes for success.
