I have had my 4S since launch day. I leave my phone plugged in all day while at work because i listen to streaming radio over my stereo bluetooth headset for nearly 8 hours a day. I use a combination of ESPN Radio, I Heart Radio and Radio.com apps. Been doing this for two years, going back to my 3GS. I have noticed a few times that my 4S battery has DECREASED while plugged in on several occasions. A little while ago, I noticed that even though my phone had been plugged in since 7:00am, the battery had dropped from 100% to 92% somewhere in the past hour. I had the following apps "open" in the multitasking dock: ESPN radio (only one "active" at that moment) I Heart Radio Radio.com Facebook Twitter Email Safari Tapatalk Messages Phone Settings. Also, bluetooth was on and active and i was streaming over 3G. I decided to try closing one app at a time, waiting a few minutes between each one, to see at what point the battery started to increase again. I closed I Heart Radio; no change. I closed Radio.com; no change. Then I closed Tapatalk and the battery started and continued to increase. Hmmm... I'm assuming that most people on this forum probably use Tapatalk at some point to access the forum instead of Safari. Maybe I'm wrong. I'm just wondering if the Tapatalk app could be the common denominator that's causing us to lose battery power even though the phone is plugged in. Any thoughts? FWIW: I have read the different tips for helping battery life and utilize several of them. I have restored as a new device as well, with little to no change. And I am aware that iOS 5.0.1 will address battery issues, supposedly.