# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2009-12-16 08:37:53 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/6724863923) I'm amazed at how long a iPhone battery can last if you turn off GPS, WiFi and 3G data. I'm in the office now and have power! YAY!