Short answer: Yes - the Feingewebe Wallet with MagSafe works with all iPhones that support MagSafe (iPhone 12 and newer) and can also be attached to MagSafe cases.

Details:
- The wallet couples magnetically via MagSafe; compatible iPhone models are iPhone-12 and all newer models (including iPhone 13, 14, 15, 16 and 17/ iPhone Air/Pro variants), provided the device supports MagSafe or a MagSafe case is used.
- It can hold up to three cards and supports the "Where is?" function for location display when disconnected from the iPhone.

Note of uncertainty: I am not completely sure whether Apple explicitly excludes individual special cases (very old models without magnets or third-party cases with a thick back); if your iPhone is older than iPhone 12 or you are using a particularly thick case, liability may be limited.