A tale of three SIMs (iPad, iPhone 4 & “Normal”)

iPad IPhone4 Normal Sim
The iPhone 4 SIM card is the not the same as the others.  It’s missing the AUX1 & AUX2 pin-outs.  Which are the contacts for use with USB devices.  Such as connecting your mobile phone to your car, via USB.
(AUX1 is the USB D+ pin, and AUX2 is the USB D- pin).

The pictured SIMs are from Telstra.  And no, I don’t know why Telstra decided to use a different SIM for the iPhone 4.