Perhaps like me, you had the problem using your sim on the iPhone 4 and iPad using a micro-SIM.
Above is a picture of the SIM cards – as you can see, they vary a lot, but the only parts that matter to us are the contacts which are common to the MicroSIM and SIM. Electronically, the SIM and MicroSIM are the same so we can cut the rest away and not worry (so long as we are careful).
To begin with, line up the three contact on the MicroSIM with the same ones on the SIM card. You can just look for the 2 centre lines and make sure they are in line and that the top of the MicroSIM is straight. Then get your meat cleaver and press down gently to score a straight line.
Cut along the score line carefully. Once you have done this, line the top of the SIM with the MicroSIM and you should see that the contacts are aligned.
Turn the SIM & MicroSIM round 180 degrees, line up the bottom and repeat with the meat cleaver, then cut along the score line once again.
The SIM should now be the same height as the MicroSIM – we are halfway there!
Line up the centre of the MicroSIM with the SIM so that we can be sure it will be aligned within the iPad
Repeat the process with the meat cleaver and scissors, then you should have a SIM which is almost the right size, save for the top edge and corner.
Once again, repeat the process with the meat cleaver and scissors, then you should have a SIM which is the same size apart from the corner.
Cut off the corner of the SIM card – you can just use the meat cleaver for this if it is nice & sharp.
Your SIM card is almost ready to go in to your iPad. As you can see, the AT&T MicroSIM has slightly rounded corners.
Use your meat cleaver to take off the tiniest of amounts. Remember, you can take more off, but you can’t put it back on.
Your SIM should now fit in your iPad MicroSIM tray.
Gently insert it in to your iPhone 4 – iPad 3G.
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