3M Adhesive 4 Packs Thin Metal Plate For Magnetic Car Phone Holder (2 Round and 2 Rectangle)

Good item, does the job and fair price.

Very pleased with this product. The adhesive hold is very strong and secure, and it has been working well for a long time without any issues. It does exactly what it should and feels reliable.

🧪 First Impressions Used these across two phones and a satnav setup—wanted something low-profile that sticks clean and holds firm. Straight out the pack, they’re thin, lightweight, and come with proper 3M adhesive backing. No peeling, no residue, and no bulk under a case. Stuck one rectangle plate inside a silicone case and one round plate directly on a backup phone—both held solid on a magnetic mount, even over bumps and motorway runs. No wobble, no drop. The magnets grip well, and the plates don’t interfere with wireless charging if placed low or off-centre. 🧰 Real-World Use ✅ Used in van and car—held firm on dash mounts and vent clips. ✅ Plates are thin enough to sit under most cases without bulging. ✅ Adhesive sticks clean—no lift after weeks of use. ✅ Ideal for phones, GPS units, or small tools with magnetic mounts. Also tested swapping cases—plate stayed put, no mess. Good for anyone who wants a clean, reliable mount setup without faff or bulky brackets. 👍 Pros ✅ Strong 3M adhesive—sticks clean, no residue ✅ Slim profile—fits under most cases ✅ Two shapes—round and rectangle for flexible placement ✅ Works with most magnetic mounts ✅ 4-pack—spares for multiple devices or setups 👎 Cons ❌ Not reusable—once stuck, it’s fixed ❌ Can interfere with wireless charging if placed dead centre ❌ No protective film included—watch for scratches on bare phones ❌ Not magnetic itself—relies on mount magnet 🧭 Final Verdict If you want slim, strong metal plates for magnetic phone mounts, the YIANERM 4-pack earns its spot. I’ve tested them across van runs, daily drives, and gear setups—no drama, just clean mounting and proper hold. Good stash-ready kit for anyone who wants their phone dialled without the faff.

Perfect for magnetic attachments, phone holders etc. 3m adhesive is always great. Great design with large & small, well worth the momey

Makes the case hang on tighter.

I stuck the rectangle ones to the back of a tablet so that I could use a magnetic phone mount. It worked well. I wish the circular ones were larger as they are too small for magsafe mounts

I have purchased this adhesive metal plates to be able to use them with car phone holder overall it’s pretty versatile and works with 2 different phone holders. It does hold phone pretty tightly but it doesn’t feel fully safe. Adhesive is extremely strong but with that plate on my phone wireless charger stopped working.

I left my magnet on a works phone when I left, thankfully these work with my holder in my car. Would recommend.