I did not see a thread on this so I registered so that I could post this problem. I have an EVO 4G that I purchased used. I only want to use it as an MP3 player. As such, I put it in airplane mode. After 45 minutes of music playing, the battery would drain down to 15%. I figured this was an old battery and was past its useful life. Therefore, I ordered a new one from Amazon and charged it to 100%. I still have the battery drain problem. Any thoughts?
Thank you
Thank you