MagSafe phone cases are much like any other case with one key difference: magnets. Inside every MagSafe case is an array of special rare-earth magnets perfectly aligned to fit MagSafe charging docks (which also have magnets, albeit in reverse — a complementary orientation). That’s why they snap into place so quickly and securely with little risk of falling off. 

Thus, MagSafe cases only orient iPhones with MagSafe charging plates. They don’t do any of the actual charging. The charging is delivered by the inductive coils within the charging plate and phone. But this orientation is important. Though your iPhone may possess the tools for wireless charging, it still benefits from the case’s magnetic lock-in to align properly and quickly. Such cases are also designed with a specific thickness to facilitate the connection, while regular cases might be too thick. Without precise alignment, fast charging and attachment aren’t assured.

Every MagSafe accessory worth its price tag uses these same basic principles, so they’re compatible with many different models and devices. However, not every case is the same, nor are they all built to deliver the goods.

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