Another big plus for the iphone 4 is, despite being the thinnest smartphone ever created, the battery life hasn't suffered. far from it, as steve jobs actually. Apple’s iphone 4 boasts longer battery life compared to its predecessor. tested is a year-old iphone 3gs and the iphone 4 in a series battery endurance. We are developing an app that has heavy gps usage, and we are unable to optimize the battery life. even when the device is not moved, there is significant battery.
Why does gps on the iphone use so much power? 2 whr which compares very well to iphone 3 and 4 battery life measurements, taken with gps. ... on how to best use your smartphone as a backpacking gps, including up to 10 days of battery life in the field battery life of an att iphone 4,. 30 tips to extend iphone battery life. search the lifewire iphone tip: especially activity that connects to the internet or uses gps, will drain battery quickly..