On 27 january I purchased it from snapdeal.com. it is hang after 2 applications are opened.system is stop working.i remove the battery and restart the phone.
I suggest you infocus that the processing of this smartphone is not good as you mentioned. No screen smoothing like other budget smartphones.only battery backup is good in this and nothing is good.i have not found any update of android version.as they mentioned that it is upgradable to marshmallow.