Blackberry 9900 and 9930 Battery Problem

The competition between Smartphone vendor is very tight right now. We can see from operating system software available on the market now, like IOS, Android, Blackberry OS, and Windows phone. Many user has had bad experience with their smartphone lately. iPhone 4S user has battery power problem, and now we had heard that Blackberry user had battery problem too.

There are Blackberry 9900 and 9930