Does it charge skype on your iPhone 4 when your far away?
Hold the home button and the lock/power button on the top for approx 10 seconds
If you use Wi-Fi on your Iphone does it charge your bill?
No, It shouldn't do.
What do you do when your iPhone 4 wont charge?
take it to an Apple repair shop and get them to change the battery. Check that it is not the USB cable or adaptor that is at fault before incurring repair costs
When you get your iPhone 4S should you charge it for 24 hours?
No you only need to charge modern mobiles until they are fully charged.
Why your iPhone 3G gets hot excessively when you charge it?
Apple invented the iPhone 3G.