Convert MicroSIM (12 x 15 x 0,76 mm) to miniSIM (25 x 15 x 0,76 mm) Required if you need to insert the microSIM card of your iPhone 4 or iPad 3G in a device that require a miniSIM one (25 x 15 x 0,76 mm). Share a single card with one good data plan on your iPad/iPhone 4G and a 3G modem, iPhone 3G or another similar device.