Buying used Z3 - how to make sure that drm keys exist

Hi guys. I intend to buy a second-hand Z3 in a few days and I am wondering on how to make sure that it has not been tampered with and that the original drm keys still exist.
I believe that looking if the X-reality settings are present is one indication that the drm keys are present, but such settings would also be present if the pseudo "drm fix" was applied to the phone.
Is there any way to make absolutely sure that the previous owner has not lost the original drm keys of the phone and that they are present in the phone ?

Thank you!!

How to turn off soft keys android

so my broke my motorola droid max screen and now it stuck on pressing/spaming the home soft key making the device useless. So i was wondering if i could disable them also i tried rooting but my phone just doesnt want to be rooted :confused: :( :crying:

Is it possible to disable the soft touch keys without an app/mod?

I'd like to disable the touch keys that are taking up display real estate and have my Nexus 7 2013 be in permanent immersive mode or full screen mode. I'd like to use Pie Control instead to navigate my screen. Is it possible to disable them? I tried apps like Hide Soft Touch controls and they can be flaky switching back & forth between full screen and non-immersive mode. Is there a hack that can do this that doesn't affect system stability?

Samsung Z1 Tizen phone Short-Cut Keys and Secret Codes

Samsung Z1 Tizen phone Short-Cut Keys and Secret Codes http://www.downloadtizenapps.com/201...ret-codes.html

How to Disable Capacitive Keys

Hi my this is my first post i have a note 1 on tmobile sgh-t879 that is unlocked from tmobile and it is running twrp and CM 10.1
i want to know is there any zip package i can install in my recovery to disable my four capacitive keys? i already got the
on screen soft keys but i need to disable the capacitive keys :confused: