Summary: It’s a do not buy
I needed a wireless charger for my iPhone X and after looking at various brands decided to go for the Spigen. It was cheap at £14 and looked sleek and up for the job.
Unfortunately 10 minutes after the unboxing I was already filling out my return on Amazon.
The provided USB cable is cheap and short, this meant that the pad was always at an angle. Glass backed iPhone + angled pad meant only one thing, it kept sliding off.
If you use a case you’ll most likely be ok but I’d still spend a little more to get an Anker.