Is this viber suck battery more ?? as it use my phone ram for around 20mb . same goes to whatapps , but it only suck 4mb ram . Is our android phone suck battery counted on ram usage or cpu ??? or ram is just for performance

sorry if i was being confusing... what i meant was...

we can tell if a message has been delivered or not by looking at the arrow sign. we can also tell if a call is connected by the the ringing/ calling description. usually, a message is not delivered or a call is not connected because the user has exit viber.

with the c2dm, messages and calls are supposed to wake up viber and launch it, right?

so, in this case, with c2dm... there should not be any more undelivered messages or calls that is not getting connected, right? or is this only a feature found on android phones...?