Screen is locked, how to get a board and type "SONY"

[rcchiu]

1. The phone frequently says fail to unlock and ask me to type "SONY" yesterday, even in my bag.

2. After the phone restart, now it is locked. I cannot get the keyboard and type "SONY" in start screen.

Thank you in advance. 

[_alexdon_]

@rcchiu have you checked this topic?

/t5/Xperia-Z3-Compact/Lock-Screen-Sony-Code/m-p/1060590#M17804

[rcchiu]

Thank you but it didn't work. Seems 2016-05 someone has the same issue.

My problem now is the phone does not take any input from the screen. (either writing or keyboard or call the wifi menu out.)

How can I take action? 

[rcchiu]

Got a trick to solve it. You press the power button for several times quick.

At certain chance the phone stopped and you can enter the pin code.

Then enter pin code.

How can I turn off the "SONY" feature. This is so dangerous!

[mtmtppp]

Thank you for very useful tip!

Now I have the same problem. I will try your tip.

[mtmtppp]

My devices are XZ3 and XZ2 premium. Both devices have the same problem.