Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A405 Safari/7534.48.3) I know many have battery issues (me included). I assume new Apple users (first time iP4S owners have little to compare battery life to if they didn't enjoy the awesome iP4 battery). I'm in the middle of my first unscientific test of 5.0.1 to see if I have notice any improvements. After you've had some time to experience the new software, please post w/: 1. Greatly improved battery 2. Slightly improved battery 3. No change 4. Slightly worse battery 5. Significantly worse battery EDIT: First hour of intense WiFi web surfing on 4S = 10% drop in first hour On 5.0 I was losing 15% per hour. I have to say this is a great improvement thus far, and brings me inline w/Apples claim on 10 hours of web browsing. Now for some standby testing!