All new iPhone 12 models come with MagSafe, a technology that uses magnets on the back of the phone to allow users to attach accessories to it. Apple today updated its accessory design guidelines to include more details on how accessory manufacturers implement MagSafe technology in their products.

Apple has comprehensive accessories design guidelines that provide a guide for other companies to create certified accessories for iPhone, iPad, Apple Watch, and other products. Today these instructions have been updated with some interesting new details about the iPhone 12’s built-in MagSafe technology.

In a recently uploaded file PDF file, The company revealed the specifications that “Made for MagSafe” boxes should follow. This includes surrounding the entire device with a maximum thickness of 2.1mm – although Apple recommends building cases that are 2.0mm thick.

Case manufacturers also need to ensure that the accessory works with both MagSafe Charger and iPhone Leather Wallet. Case magnets should align properly with iPhone back magnets, and Apple says MagSafe covers can’t contain any other magnets.

All magnets that are part of the MagSafe case magnet kit must be placed in the same plane. The case and magnetic matrix for the MagSafe case should enable MagSafe accessories to be magnetic self-aligning within a maximum radius of 1.55mm

Apple requires MagSafe accessories to use the N45SH NdFeB Magnet with a 7-13μm NiCuNi coating. Users should also be able to remove the MagSafe extension by applying a strength level between 800 and 1100 gf (grammage force).

As noted before Mac rumors, Apple also specifies that MagSafe cases should not rely on magnets to secure them firmly to the device, making even some of the official iPhone 12 videos appear contradictory as the company notes that the cases are magnetically attached to the iPhone 12.

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Of course, accessory manufacturers wanting to offer an Apple-certified MagSafe case or charger must follow all instructions included in the PDF. You can read it here.

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