Its my opinion to do not buy this product for long term use .
I have purchased samsung galaxy core 2 . two years ago .
As I have to use this product for two or more years .
the product is having a main problem of bad speaker sounds and hanging after one year of usage .
I used it for two years . second year with this product is a worst time . this product will irritate you with several problems .
so it is a better option to buy this product for short term usage .
this is my personal experience with this product
thankyou