Battery backup and camera is really nice touch senstivity is good as compare to other compay mobile at this range of price. But main problem is RAM storage .after installing 3-4 apps like fb messenger, whatspp, twitter, any small size game your phone is now start to hang. Ram is now full. So it is main problem. And in smart I think most of the teenagers would like to play atleast 600 mb games after installing fb, whatsapp.n etc