I am using WhatsApp since from 2 years. I found that now a days the WhatsApp is not running well it has too many bugs which needs to be fixed. WhatsApp is giving the so many updates which is not quiet more useful. When I used to send a message with 3G network it takes time, but other Messenger apps didn’t do so.WhatsApp also sometimes hangs. WhatsApp has to work on the bug fixation issue to maintain it’s market