In this section, I focus on hardware issues: potential problems with peripheral devices that attach to your iPhone and potential problems with the iPhone hardware itself.
An iPhone comes with a dock cable and an iPhone dock. The dock cable has a USB connector on one end and a dock connector on the other:
The dock-connector end connects directly to the dock-connector “outlet” on the iPhone.
The USB connector end attaches to a USB port on either a computer or a power adapter.
Whether connected to an outlet or a computer, the connection can be used to recharge the iPhone’s battery. To sync the iPhone with iTunes, you obviously need to connect it to a computer.
Instead of connecting the dock cable directly ...