We run our battery life tests using the default settings that the phone uses, doing a settings reset before each test. And this poses an issue for the iPhone; by default, the WiFi scanning is enabled, so the iPhone is constantly scanning for WiFi networks (but not connecting to them; we did not set up a WiFi network for these tests). We'll be running a series of tests over the next few days to determine the effect of various settings on battery life, including WiFi scanning, turning off the WiFi and browsing over WiFi. more....
