GDMINLO Mount Metal Plate（8Pack） for Magnetic Car Mount Phone Holder with Full Adhesive for Phone Magnet, 8X Rectangular (Black)

So far so good - metal plates come in a nice variety of sizes & shapes, hold very well to magnets, have a good adhesive to stick the plate onto your phone case which upon initial inspection looks like it will last as long as the case itself will last, and the adhesive has not failed under summer heat conditions nor failed under body heat conditions in pants pockets. Is thin to the point of not being noticeable sliding in/out of pockets.

Yep, they do the job even in the hot desert sun.

Strong magnetic, for my phone backs. Works well, size is good for magnetic phone holder.

As good as anything you pay a lot more money for. Very happy.

i have an iPhone 15 Pro Max. maybe if my phone weren’t so big and heavy, and they’d hold better and my phone doesn’t fall, it does a 180. i’ll be driving along and, whoops, there goes my phone, hanging a left and i have to grab it because if i’m turning at the same time, al the forces could *then* act upon it to make it fall. this is using just one plate. i hesitate to place another because i don’t want to block charging. so far, im willing to continue using these. i also bought thinking the adhesive and the page were separate like the original brand i bought had them, where that brand had a metal plate. that is much, much better. this has the adhesive already on the plate.

Magnets work well. Price is right

Really strong magnets

These work so well. I’ve never had an issue with them falling off or not working.