IPad SIM -> Iphone 4 ?

[xardoz]

Is the Ipad sim card the same as the one in the Iphone 4? If so and I put my Ipad sim in one would everything work other than voice calls?

 

[jaybrass73]

If the Apple site is to be believed then you need a separate SIM, with a seperate serial number as your iPhone 4 SIM will be paired to your iPhone 4 - I may have misunderstood?