BTW - I used it virtually constantly on internet or game playing during a bus ride from Boston, MA to south of Rochester, NY (about 7 hours). I did kill the battery after about 6 hours but popped in my spare. All the iPhone users and those with other phones were borrowing mine to call people to pick them up during the last 30 minutes of the trip. Those poor people can't pop in a new battery (I came prepared)!