Magnetic phone accessories should be simple: ring of magnets, snap, done. In practice, "MagSafe compatible" is one of the least regulated phrases in tech retail, and it covers everything from full-strength certified gear to cases with a magnet sticker inside.
First: a case without its own magnet ring kills the magnetic connection through any meaningful thickness — if you use magnetic accessories, the case itself must have the array built in. Second: leather and silicone grip differently in mounts; hard-shell backs seat most solidly. Third: check the camera bump clearance for your exact phone model and generation — "fits all models" listings fit none of them well.
Phone cases have perhaps the most inflated list prices on Amazon — $49.99 crossed out to $12.99 is the category's resting state. Ignore the theater and evaluate the actual price: under $15 for a well-reviewed magnetic case from a known accessory brand is normal; premium and certified cases genuinely discount around new-phone season in September, when last generation's inventory clears. That September window is the single best time to buy quality cases and magnetic chargers.