I had received the phone on 1st Feb’16. Phone is simply awesome. UI is good and there is no lag.IPS display plays Full hd dts track movie without any glitch. Color reproduction is good. USB OTG checked with 64gb pendrive and working fine. Memory slot checked with 32gb microsd and working fine. Phone sound is quite good. Dual micro sim slot and 4g on sim1 only and there is no swap option.13MP Rear+5M Front gives good quality photo.
Impressive thing is fingerprint sensor, which takes little bit time for setup but never fails to unlock. I Tried nearly 60 times to unlock the phone with fingerprint and the sucessrate is 100%. It unlocks the phone in fraction of the second.
About internal memory 10.6gb only available for the users out of 16gb.
AnTuTu benchmark: 32290
Non removable battery, quick charge option is available under battery settings.About battery backup, I will update later.