Huawei P30 Pro Faq page 6

EMUI 5.X: Go to Settings > About phone. Touch Build number seven consecutive times
(enter the lock screen password if required) until the "You are now a developer!"
message is displayed. Then return to the Settings screen and go to Developer options >
Profile GPU rendering > On screen as bars > Close.
EMUI 8.X or later: Go to Settings > System > About phone. Touch Build number seven
consecutive times (enter the lock screen password if required) until the "You are now a
developer!" message is displayed. Then return to the System screen and go to Developer
options > Profile GPU rendering > On screen as bars > Close.
Magic UI 2.0.1: Go to Settings > System > About phone. Touch Build number seven
consecutive times (enter the lock screen password if required) until the "You are now a
developer!" message is displayed. Then return to the System screen and go to Developer
options > Profile GPU rendering > On screen as bars > Close.
2. If the issue persists, go to:
EMUI 5.X: Settings > Apps
EMUI 8.X: Settings > Apps & notifications > Apps
EMUI 9.X: Settings > Apps > Apps
Magic UI 2.0.1: Settings > Apps > Apps
Select Settings from the app list, then go to Storage > Clear data.
3. If the issue remains unresolved, back up your data, and go to the following path to restore
your phone settings.
EMUI 5.X: Settings > Advanced settings > Backup & reset > Reset all settings
EMUI 8.0 or later: Settings > System > Reset > Reset all settings
Magic UI 2.0.1: Settings > System > Reset > Reset all settings
Note: Do not revise other Developer options. It is recommended that you disable Developer
options after the issue is resolved.