If this function is activated on the Huawei smartphone, a double-tap on the space bar inserts a period and then a space.

Android 10 (EMUI 10.0)
Step 1:  Open the  settings
Step 2:  Tap on  System & update
Step 3:  Tap on  Language & input
Step 4:  Tap on  SwiftKey Keyboard
Step 5:  Tap on  Typing
Step 6:  Tap on  Typing & autocorrect
Step 7:  Activate or deactivate  Quick period
  1. Open the settings
  2. Tap on System & update
  3. Tap on Language & input
  4. Tap on SwiftKey Keyboard
  5. Tap on Typing
  6. Tap on Typing & autocorrect
  7. Activate or deactivate Quick period

Huawei Instructions