Besides the time, the date is also automatically obtained from the network and set on the Huawei smartphone by default. If
we want to set the date manually, the automatic must be disabled.

Android 10 | EMUI 10.0
Step 1:  Open the  Settings
Step 2:  Tap on  System & updates
Step 3:  Tap on  Date & time
Step 4:  Disable  Set automatically
Step 5:  Tap on  Date
Step 6:  Set the  date  and tap  OK
  1. Open the Settings
  2. Tap on System & updates
  3. Tap on Date & time
  4. Disable Set automatically
  5. Tap on Date
  6. Set the date and tap OK

Huawei Instructions