Just bought the S21 ultra and for some reason none of my wireless chargers work with this device but they all worked with my note 20 does anyone know do I have to buy a Samsung charger for this device
Try to get a wireless charger that supports "fast wireless charging" you should probably just buy either a Samsung wireless charging pad or an anker wireless charger. Make sure you use the included power adapter with your wireless charger.
I think u should wait for new wireless chargers to come out because it sounds like none of the chargers are compatible yet. Check on Amazon, wireless chargers that work with Samsung Galaxy s21s