Forgotten passcode and phone set to Plane Mode

[DarrenBilly]

Hello,

My Brother has this phone. He recently changed and forgot the new pattern code he set, and the finger sensor seems to be disabled. There is no Forgot Passcode option. I read about logging in to the phone using the Gmail device manager, but this does not work, I think because his phone is on plane mode. The only screen he can access on the phone is to enter a pattern. I believe he has 11/30 attempts left before the phone resets. 

I read something about OTG cables, would this work considering his phone is on the lock screen?

Any advice helpful, thank you.

Darren 

[CameronT]

@DarrenBilly,

You can pull down the quick settings menu from the lock screen when you can see the time, but before you get the keypad to enter your PIN.

[DarrenBilly]

Sadly that's not possible. It restarts, shows Sony logo and goes straight to unlock screen, then shows I now have 13 more attempts. I do not see the time at any point, and cannot drag down the quick settings, I have tried many times.

[CameronT]

@DarrenBilly,

I see, you have secure startup enabled. The only thing you can do in this situation is the software repair using Xperia Companion.