Easiest way to check
silver back > iPhone 2G
white or black back > iPhone 3G[/QUOTE]

agree with ^^^ if the back is silver then its the old one and if its either white or black its the new 3G

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T-Mobile USA
Ver. 2.2
Firmware 02.28.00
Unlocked yellowsn0w v0.9.4/5/6/7/8
iPhone 3G White 16gb
Incoming/Outgoing calls OK
Texting OK
Edge OK
E-mails OK

Thank You Dev-Team