I need to buy a wireless charger and most of the ones I can find in stores are from Samsung and their description doesn't say "Qi". Are they working with Windows phones like Lumia 930?
A friend of mine had a Samsung Wireless Charger for his Galaxy S7 - I successfully used it with my Lumia 950 XL.
I'd suggest trying it in-store to be certain. Or, find a store that will allow you to return it if it doesn't work.