I have an odd battery problem. My S3 will die and at times when I plug the charger in and the Battery Charging Screen comes up, It shows the battery has more than 50% life. If I unplug the charger and use it, the battery lasts maybe an extra hour but once it reaches about 6% the screen starts flickering and then the mobile network disconnects. I'm sure this is due to low power from the battery.
Any way for me to fix this or to ensure my phone is displaying the correct battery percentage?