I had the same issue on my 16GB 4S. I did everything I could (shut down apps, reboot, full restore, etc...).
Nothing worked. My battery life on standby was 5 hours. I took it to the Apple store yesterday. They ran a 2 minute diagnostic and gave me a brand new phone. I asked for more details about what happened to my old phone, but got a bunch of waffle. I decided to quit while I was ahead and take the new phone.
Nothing worked. My battery life on standby was 5 hours. I took it to the Apple store yesterday. They ran a 2 minute diagnostic and gave me a brand new phone. I asked for more details about what happened to my old phone, but got a bunch of waffle. I decided to quit while I was ahead and take the new phone.