Hello Rio997,
With regards to magnets affecting the iPhone's camera, you may review some helpful information on that topic here: Magnetic accessories might interfere with iPhone cameras - Apple Support
The cameras in your iPhone take great photos even in difficult conditions. If you accidentally move a camera when you take a picture, the resulting image can be blurry. To prevent this, some iPhone models have optical image stabilization (OIS).1 OIS lets you take sharp photos even if you accidentally move the camera. Additionally, some iPhone models have closed-loop autofocus (AF).2 Closed-loop AF resists the effects of gravity and vibration to preserve sharp focus in stills, videos, and panoramas.
With OIS, a gyroscope senses that the camera moved. To reduce image motion, and the resulting blur, the lens moves according to the angle of the gyroscope. With closed-loop AF, on-board accelerometers measure and compensate for gravity and vibration effects. Magnetic sensors determine the lens position so that the compensating motion can be set accurately.
How to avoid magnetic interference
Third-party manufacturers make some accessories with strong magnets or magnetizable metal plates that are near the iPhone rear camera (or cameras). These magnets and plates can latch folio covers, join separable cases, or attach to rigid mounts—for example, car mounts. For best camera performance, avoid accessories that use magnets or magnetic metal near the iPhone rear camera (or cameras).
For third-party MagSafe cases for the iPhone, you may find a few that are sold through Apple's online store here: Cases & Covers - MagSafe - Apple
Cheers.