I had been using this phone from past 1 month and observed various problem-
Heating issue during charging and playings games.
Low light performance is very bad .and dont has a samos sensor which make distortions in image and not colour accurate.
Processor performance is low as compared to qualcom processor which make multi tasking and heavy gaming more laggy.
Non backlit navigation button is not at the back side so it is difficult to use at night time.
Has many inbuilt micosoft and lenavo application which are not much useable and can not be uninstralled.
At low light flicking occures oftenly which automatically make brightness up and down.
No NFC sensor which helps in wireless payment.
Althrough, its is not a good phone under 11k.