Hallo to everybody! I think it would be a good thing for everyone to do a survey about our iPhone 4 battery life. In my case: with all enabled (ultrasn0w, lockinfo, mail push, multitasking) my battery life is about 2 days (48h). In the two nights i go in airplane mode so 32 - 34 h iPhone works and 16 - 14 h it sleeps. I'm very satisfied. 2 days for a smartphone is not so bad. And you?