Recently I have been having an issue with my Thunderbolt. The fully charged battery drains quickly, and when it drops to about 50%-60% or so, the phone shuts off and completely discharges to 1 or 2%. I thought it was just the battery so I changed to another newer battery and it took some time to fully charge, but when it got to about 50% it shut off and discharged to 1-2%.
Any ideas?
Any ideas?