Does the iphone 4 ever heat up after long time of use?
Why Does My Hard Drive Run for a Long Time After I Turn on My Computer?
It is normal to notice your hard drive running for a while after you start up your computer. You may also notice that performance seems a little sluggish until this hard drive activity has stopped.
Does the iPhone 4 generate more heat than the iPhone 3?
What happens if you listen to loud music all the time after a long time?
you would probably damage your ears.
Does iphone 4 have heat or pressure?
battery produces heat touch screen does not require pressure