Tech:apple iphone buying advice

iPhone Comparison Table

iPhone iPhone 3G iPhone 3GS iPhone 4
Price1 Discontinued Discontinued From £419 From £499
Storage 8/16GB 8/16GB 8/16/32GB 16/32GB
Screen Size 3.5" 3.5" 3.5" 3.5"
Resolution 480x320 480x320 480x320 960x640
Camera 2 Megapixel 2 Megapixel 3 Megapixel 5 Megapixel
Video No No Yes Yes (720p 30fps)
Weight 135g 133g 135g 137g
Wi-Fi 802.11b/g Yes Yes Yes Yes
Wi-Fi 802.11n2 No No No Yes
Bluetooth Yes Yes Yes Yes
3G No Yes Yes Yes
GSM (2G) Yes Yes Yes Yes
A-GPS No3 Yes Yes Yes
Digital Compass No No Yes Yes

1All prices are unsubsidised prices from the Apple website.
22.4Ghz only.
3Capable of using trilateration of cell towers and wifi hotspots to find approximate location.