A:what function you will need to do?

A:Function: Same
Diagun IV: looks like a cellphone
Pro mini:looks like a tablet
Price: Diagun IV is more cheaper than pro mini

A:In this case, please do the followings:
> Check all running applications and stop the unnecessary applications (Steps: Settings -> Apps -> Running -> Tap the desired application and then tap “Stop”).
> Check all installed applications, remove the unnecessary applications (Steps: Settings -> Apps -> Downloaded -> Tap the desired application and then tap “Uninstall”).
If all steps mentioned above are finished and the system still works slowly. Please try to close the system and reboot your X-431 Diagun IV.

A:You can set screen lock as pattern or password. If you forgot the password, please consult your device provider or reset your device.
   Warning: Resetting may cause data loss. Before use, please make sure important data has been backed up.

A:Please turn off the screen while X-431 Diagun IV keeps idle.
    Set a shorter standby time.
    Decrease the brightness of the screen.
    If WLAN connection is not required, please turn it off.
    Disable GPS function if GPS service is not in use.

A:Yes, it can.