The iPhone 3G comes with a USB Cable, but you might find you need two or three of them.
Having an extra iPhone USB Cable will enable you to connect up your iPhone to another computer, sharing your songs, video, and data, and charging you iPhone.
They are very cheap to buy, and it's recommended you have an extra one on hand if you go on holidays.
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 Original Usb cable Dock adapter Charger for ipod iphone  - 15m US $14.96 |
 LOT OF 10 USB DATA CHARGING CABLE For iPod iPhone 3G - 16m US $13.99 |
 USB CABLECARAC HOME WALL CHARGER FOR IPOD iPhone Nano - 18m US $6.99 |
 USB CABLEAC TRAVELCAR CHARGER FOR APPLE IPHONE 3G NEW - 18m US $9.99 |
 Apple OEM USB Dock Sync Cable fr iPod nano Touch iPhone - 21m US $7.99 |
 Apple ORIGINAL USB AC AdapterUSB Cable for iPhone iPod - 21m US $9.99 |
 Apple ORIGINAL USB AC Adapter Cable for iPhone iPod - 22m US $17.99 |
 USB CABLE AC WALL CAR CHARGER FOR APPLE IPOD IPHONE 3G - 26m US $7.99 |
 Original Apple iPhone Component HDTV AV USB Cable USA - 27m US $32.25 |
 USB CABLECARAC HOME WALL CHARGER FOR iPhone 3g Nano 4 - 30m US $6.99 |
 USB carAU mains chargerdata cable for iPhone 2G 3G - 36m US $6.28 |
 USB Cable CHarger adapter for iPod touch Nano iPhone 3G - 39m US $8.99 |
