If you are using an iPhone 4, you know that the MicroSIM in it is not compatible with other phone. For example if you are facing the all-too-common antenna / reception issue on the set and want to temporarily use the SIM on your older iPhone, you will not be able to do so because of the new MicroSIM form factor.

To make the new MicroSIM back-compatible with older phone you can use a MicroSIM adapter being sold by the MicroSIM Shop.

The MicroSIM adapter covers your smaller MicroSIM in a plastic case so it can be fit into older devices. The plastic casing is quite sturdy and easily fits into your older phone. At any time you can take out the casing from your phone, extract the MicroSIM and reinsert it in your iPhone 4. Your iPad 3G’s MicroSIM can also be used on your older iPhone when you do not want to make the iPad’s data portable without having to carry a big device around.

Main beneficiaries of this product include people with older iPhones who also own an iPhone 4 or an iPad. You can purchase the adapter from MicroSIM Shop’s website for €5.99.