Karbonn was not so popular but now its rising like anything,Its presently the best smrt phone provider known for its cheap and worthy price.Like all of its smartphone the Karbonn A21 is also a great smart phone which has capacitive touch screen and runs Android 4.0 ICS. It comes with 512 MB RAm and 4GB internal storage.It has a primary camera of 5.0 MP and the front camera of 1.2 MP.When i tested it the games like temple run and other high graphic ga,es ran smoothly.It has a good interface and a bueatiful design which is very impressive at the first look.I din't find any lags and also any bugs this is thebest phone available approximately for 12,000.
Specifications-
TFT capacitive touch screen
5 MP camera with video recording and 1.2 MP front camera
1.2 GHz dual core snapdragon processor
WiFi and Bluetooth enabled
3G and Dual sim
512 MB RAM
4 GB internal memory
MicroSD card slot available and expandable upto 32 GB.
This is a great phone comparing to Galaxy Y and many other phones.Its great for gaming at a cheap price!