If my phone is turn on it can detect that it is connected to a charger but still wont charge because the battery gets lower and lower. When its turn off the battery logo will pop out for a couple of seconds then it just turn off and wont charge at all... then while its turn off and connected to the charger when i try to press the turn on button it shows the battery logo again...please help what shoud i do....i am not rooted...my phone is 3 months old