Dear friends, Whatsapp is very impressive application.
Maximum people use it.
U can send or receive sms, voice sms on whatsapp.
U can also use vedio call option, which is very best thing.
Whatsapp is very fast application, means the massage delivery time and receiving time is very very short.
U can use it by 2G net also.
U can add your friends in a group on it and discuss or do group study.
So friends, if you stay in touch with your friends or say best friend then use it, .
U can also shair many concepts about study or anything else with your friends by using this application.
Use it.
Stay happy.