HTC Smart is the worst phone. The battery back up is horrible. I have to recharge the battery 3 times in a day. I charged it at 11 pm and went to sleep. The phone was idle. In the morning I was astonished to see that the battery is 80% exhausted.
If I attend 3 calls (each of 2 minutes) and talk to friends for 10 minutes, the battery goes down. Now I think what will I do with this good "design" ? HTC claims that the talk-time is 450 minutes. It is the utter lie.
The sound of incoming calls is low. It is being hard to talk over phone standing on the street.
Moreover the OS is too much slow and irritating. Never buy such a defective phone.