micro sim
You may have heard that iPhone 4 uses a micro sim, which is a smaller version of a standard sim. If you want to upgrade to iPhone 4 you'll need to use this new micro sim instead of the sim you use now.
There are two ways to get a micro sim. If you've registered to receive iPhone 4 updates from O2, you may receive a micro sim from us in the post before iPhone 4 is available. We can't guarantee that everyone who registers for iPhone 4 updates will get a micro sim, so if you don't get one in the post, don't worry. If you decide to buy iPhone 4, you will get your micro sim at the same time as your iPhone 4.
What does it look like?
Wonder what the new micro sim looks like? Have a look; the new micro sim is built into the shape of a standard sim.
The standard sim can be snapped out as usual and used in your existing phone.
Look closely and you'll see the micro sim inside the standard sim. When you get your new iPhone you just need to gently snap it out of the standard sim. The micro sim is only slightly larger than the gold part on the sim, so be careful.
Once you've removed both of the outside plastic portions, your micro sim is ready to go into your iPhone 4.
