System UI has stopped working

[FreyaFaery]

This is the second time this has happened with this phone. I get the error message 'Unfortunately System UI has stopped working' there is only an OK button option. This then turns my screen black and I can't do anything with the phone other than shut it down. This happens even after a soft reset and I don't have the time to start anything before it crashes again. Any helpful solutions?

[SV_Helper]

Hi , you can try this 2 method :

#Method 1

1. Remove sim card , and sd card from your phone.

2. Press the red button which is located nearby to the Sim Card reader  with needle for sim or  toothpick  for about 6 second until you hear vibration then releasse and see if the phone boot's up normaly .

#Method 2

1.Make sure your phone battery is charged

2. Press together Vol + and Power button for  few second until you hear vibration then releasse and see if the phone boot's up normaly.

#Method 3 

Do a Factory  Reset

#Method 4

1.Go to PlayStore and Search for Google Chrome 

2. Unistall Google Chrome and Reboot normaly your device.

3.If the problem is stil there , try to Update Google Chrome and do Reboot

#Method 5

-Go to PlayStore and try to install another Launcher for your phone 

Good Luck :).

[Kavta]

This is related to any new software updates that happen by default by sony.

To resolve this, first enter into Safe mode of the phone system. 

Step 1: When you get the power off screen long press power off option on screen to go to safe mode.

Step 2: Phone now restarts with Safe mode on.

Step 3: Reset what's new to factory default. Remove any unnecessary apps. 

I have to remove lots of Sony system apps. 

This might happen each time, there is a sony apps updates.