since i've never owned an iPhone before i can't compare my iP4's battery to any past experiences. i'm currently unsure whether i have a good or bad battery. i also know that people's use is subjective, so my question is: - what is the best way to test battery-life over a period of 24 hours where i won't have time to mess with my iP? on sunday i will not need to use my phone much. so what i can do is switch-on wifi, blue-tooth, leave 3G on and see how long it lasts after a full-charge. is this a good idea? i guess that leaving all comms switched-on and not using them will allow me to look at what % i have left later that day and then have something to start from. i will basically have at least a 20 hour period where i will not need to use my phone so i can start with 100% and then 20 hours later see how much battery-life i have left. if it turns-out i've got a lemon, i want to be able to explain to the regent street store staff (who i have found are mostly incompetent the issues and not be fobbed-off. here's what the site claims: "" Power and battery* Built-in rechargeable lithium-ion battery Charging via USB to computer system or power adapter Talk time: up to 7 hours on 3G up to 14 hours on 2G Standby time: up to 300 hours Internet use: up to 6 hours on 3G up to 10 hours on Wi-Fi Video playback: up to 10 hours Audio playback: up to 40 hours [* All battery claims depend on network configuration and many other factors; actual results will vary. Rechargeable batteries have a limited number of charge cycles and may eventually need to be replaced by an Apple service provider. See www.apple.com/uk/batteries for more information. For more details of iPhone performance tests for talk time, standby time, Internet use over 3G, Internet use over Wi-Fi, video playback and audio playback, see www.apple.com/uk/iphone/battery.htm] "" note the detailed info: http://www.apple.com/uk/iphone/battery.html thanks.