"1)Processor 2)Battery 3)Camera Reason-A reliable battery is absolutely necessary for everything you do. The processor power or speed also plays a vital role in the success of any gadget. Concluding, it can be said that both battery life and processor power are integral for any good gadget and a great device will incorporate both features in it. However, a processor speed has a slight edge over battery because you cannot enhance the power later. But, on the other hand you can recharge or even rep..."

"Android Versions :-
1.0 No Name
1.1 No Name
1.5 Cupcake
1.6 Donut
2.0 Eclair
2.0.1 Eclair
2.1 Eclair
2.2.x Froyo
2.3-2.3.2 Gingerbread
2.3.3-2.3.7 Gingerbread
3.0 Honeycomb
3,1 Honeycomb
3.2.x Honeycomb
4.0.1-4.0.2 Ice Cream Sandwich
4.0.3-4.0.4 Ice Cream Sandwich
4.1.x Jelly bean
And Next Version will be named Key Lime Pie
Android Versions names are Alphabetical."

"Karbonn kt21. Nice touch and fast processo makes phone stellar."