I don't know if anyone else has had this issue but when I plug my phone in at night to the AC (wall) charger it charges the phone until the battery reads charged and then the charger cuts off, the light outside the phone that indicates the phone is charging cuts off and by the time I wake up in the morning the phone is DEAD!! How can I keep the phone charger from cutting off when the battery is fully charged. I keep my phone on all of the time and was using my previous phone as an alarm clock, but that doesn't work with this one.