Encryption issue with nexus 5

[Supreet0402]

I had to install microsoft outlook in my nexus 5 device and as a result i had to encrypt the same as per my work organization mandate.
now i have to give a 8 digit code everytime i need to access it.

my phone shuts down anytime during the day and also when i put it for charging in the night and the battery drainage has increased considerably.
I cannot decrypt the phone as the data may be lost or my phone would go useless.

can someone help me find out why does it switch off on its own all the time???

 

[jackdubl]

Is it a Nexus 5X?

 

[Ry]

Mod note: Moved from Nexus 5X forum to Nexus 5 forum.