My friends is using karbonn K24+ . But this phone in one problem not work proper keypaed, this phone is 10 month old. But. When was karbonn k24+ new ? He is fast working. But in this time only problem is keypead. In phone dual sim and very good network. And small pic phone and good looking. Sound clear hearing and good perfornmance system phone. Features is better. And battery backup is long time. And phone look is best and nice. And other is not any problem in phone. Dispaley is very clear. Not effect in eye any time. So like this phone.