Secondary screen lock - "SONY" - how do I remove?

Build Number 23.4.A.1.200

I've recently updated my Z2 to the above build number. Around the same time, I also added an Exchange account through my work that forces a 6-digit PIN and encryption of the phone's contents.

I find the 6-digit PIN unlock is annoying as it is because I'm used to the pattern unlock... but I've noticed that every time I type the PIN in wrong the first time, the secondary screen (pic attached) comes up and I have to type the word "SONY" (only works in upper case too!) before I can reattempt the PIN again.

I've tried to search around online but can't seem to find anything at all about that screen... :confused:

Does anyone know how to remove this secondary unlock screen so that I don't have to type "SONY"? It pretty much means I have to unlock my phone with two hands. I'm not sure if it's part of the firmware update or whether it's a security setting forced by my company policy via the Exchange settings.

I believe the purpose of the screen would be to prevent accidental entering of the PIN 5 times, for example, while it's in my pocket and subsequently causing the phone to wipe the contents.

Appreciate any help... thanks!

Attached Thumbnails

 

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