Test code *#*#3721#*#* doesn't work and battery drains fast on my Robin.

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Rebel 1.4
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Test code *#*#3721#*#* doesn't work and battery drains fast on my Robin.

Bought NextBit 2 weeks back and My screen doesn't turn off when i receive the call . i would like to test sensors through FQC menu and I tried Test code *#*#3721#*#* doesn't work on my Robin.Also ,  I have a battery drain issue , it lasts only 12 hours .

Currently on 6.0.1 andriod version.

 

Please let me know if  I got defective piece and would like to have a phone functioning properly.

 

Thanks !