Battery life of my LG pheonix p505r is very short. Usually standby time is only 24hrs, but it was longer ever before, about 3 days. I used ATK to prolong my battery life but it didn't work. In addition, I don't think I set up something on the phone when the battery life was 3 days. At present I have no idea what to do to save my battery life. Could anybody help me? Thank you.