For what its worth, I would like to let you all know that Beta 3 is a huge improvement on an iPhone 4 over Beta 2. Stability seems to be much better, but I would need a couple of days more to verify that... to see if it sticks. Performance is dramatically improved, I can say that much already. The phone is responsive and snappy again, way better than Beta 2. Camera takes a little while to start up still, but so much shorter than in Beta2. Notification and Control Center are far more responsive, too. Animations (fly in, fly out when starting/stoping apps) is very fluid. Battery, for me, was very good in Beta 2 and it seems Beta 3 isn't changing that. Last weekend with Beta 2 I was on 100% at 4pm on Friday and, with normal usage, I hooked it up to an outlet on Sunday at 6pm still at 32% with BT/WiFi and everything else on. 5 hours ago I updated to Beta 3 and going through the new system a lot I'm still good at 96%... I will checkout auto app update in the App Store app the coming days as it seemed the culprit of much mayhem in Beta 2 and 1.. It drained battery and made me have to reboot my phone every morning. -- Edit -- Oh... I upgraded from 6.1.3 to iOS7 Beta 1 and from there on used the OTA functionality to upgrade to Beta 3. No fresh install, no difficult things done. Just used iTunes initially and then OTA.