# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2010-07-11 18:09:35 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/18288606885) In reply to: [@xspyda](http://twitter.com/xspyda/status/18276594385) @xspyda Not done an iPhone 4 GPS battery stress test, but I have noticed better battery life on i4 compared to 3GS