So it was late at night, and I couldn't get any sleep because there I was playing with my phone (Motorola Backflip). The phone was almost dead, so I decided to play with it until it dies, and then get some sleep. The phone died, and I put it in the charger, and went to sleep. When I woke up, however, I noticed the phone did not charge at all, and it kept turning on and off. Luckily, one of my relatives had the same phone, and I switched her battery with mine. I plugged her phone (with my battery) into the charger, and it worked. However, when I plugged my phone (with her battery) into the charger, it wouldn't work. It kept saying the battery level was 50%, and it wasn't really charging either. After my battery (in her phone) finished charging to 100%, I switched our batteries back. When I put the battery back into my phone, it once again said the battery level was 50%, even though I know it is 100%. And her battery, which said 50% on my phone, said the correct amount, 27%. SUMMARY: Basically, no matter what the real battery level it is, battery levels on my phone always say 50%, and when plugged to a charger, will not charge at all. I have to put my battery into my relative's phone to charge. Please help!