This phone is a great phone its aviable in 2 varities.
One is 16 gb hard disk and 2 gb ram
And another one is aviable in 3 gb ram and 32 gb hard disk
I also used it .its process very fast and this time it update in miui 8 version its battery life very strong and its design is very expansive with silm design with best fingerprint scanner iits sound very clear its battery is inbuilt .
Its not heat and also fast charging its 3920 hzz battery so backup