This was been present from day one. Right out of the box I charged it up and left it overnight the first night. It lost about 1% per hour that night. That comes out to stand bye time of only about 4 days. That is far less than the stated 30 days on the AT&T website. Several factory restores have not helped. It gets much worse after only adding a few apps. I can sit maybe 30 hours on stand by with only those few extra apps before it needs to be recharged. That is even after making sure that apps are not running updates and turning off notifications, etc.