The iPhone, made by Apple, is a multimedia and cell phone device. On a regular basis, your iPhone will need to be recharged. Depending on the amount of current charge on the phone, charging your iPhone may take up to an hour.
Plug the charger that came with your iPhone into the device and an electrical source.
Leave the phone alone while it charges. It will take longer to charge if you are using some of its charge to operate the machine.
Check the battery icon in the top right corner of the iPhone. This will show either if the iPhone is "Charging" or has "Charged." The icon will be a lightning bolt when the phone is charging and an electrical plug when its fully charged. A percentage of charge will be shown on iPhone 3GS only.
Disconnect your iPhone from the charger and disconnect the charger from the electrical source.