By DavidKircos • Difficulty: Moderate
This simple guide will show you how to make a Micro-SIM to SIM adapter out of the old SIM card in the iPhone 2G to the iPhone 3GS, so you can use your new iPhone 4 Micro-SIM in older devices. This process destroys the old SIM-Card. Luckily when you buy a new iPhone 4 they give you a new SIM and deactivate the old one, making the old one useless.
- Get everything you'll need:
- XACTO Knife and a good cutting surface, such as a self healing mat.
- Pencil
- SIM-Card removal tool or bent paperclip
- iPhone 4
- An old GSM SIM card that you can sacrifice to make an adapter.
- Remove the SIM Card from each of the iPhones
- On the iPhone 4 the SIM Card tray is on the right side of the phone.
- On any older iPhone the SIM Card tray is on the top of the phone.
- Use a pencil to trace the Micro-SIM on top of the older SIM-Card.
- Make sure the leads line up with the ones below them!
- Use an XACTO Knife to cut on the line you traced.
- It can be difficult to control the knife when applying enough force to cut through the plastic, so I recommend going lightly for the first couple of times to make a groove. Once you have a properly-shaped groove, go back and apply more force to cut through the plastic. You can also drill 5 pilot holes using a fine drill bit at the vertices. This also helps to guide the knife.
- When you are nearly done, flip the SIM-Card over. You should be able to see the outline of the cutout you made on the top side. For a cleaner result, finish cutting the slot from the bottom side.
- Remove the piece you cut out of the SIM.
- Insert your Micro-SIM Card into the hole you cut out of the SIM.
- If the Micro-SIM doesn't fit, you may need to cut away more plastic with the knife to enlarge the hole.
- If you cut the hole slightly too big, put a piece of tape over the back of the SIM-Card (the side without the gold contacts) to hold the Micro-SIM in place. Trim away any excess tape with the knife.
- Test it out. I put the Micro-SIM in the converter into an iPhone 2G to test it out, and everything works great!
- Thanks for reading! Feel free to contact me if you have any problems or suggestions regarding this method!