I bought this phone at the first sale and after using it for a long time here are some problems I faced :
The dual camera it gives is a total waste. The picture quality isnt good and it cant detect proper edges or depth. Time-lapse feature is also lacking.
Bad sound reception. Cant listen to music over my headphones for a long time.
Has many software bugs too. For example the brightness flickers at heavy usage.
Overheats very quickly and and the battery backup is average depsite taking a 2: 30 hours charging time.
The phone is heavy weighted and hence not very user friendly and difficult to adjust to hand.
The lenovo updates are slow even after complaints from almost every user.
Dont buy. Not a value for money.