The cameras ONLY care about the WiFi. How that data gets back to the Wyze servers is of no concern. As long as you are providing a WiFi for the cameras tp connect to and from there, it can get to the Wyze servers (via the Internet), they are happy.
So as long as your phone that you use for internet can provide a WiFi hot spot, you are good to go. I will point out that many phones when used as a hotspot, are substantially limited on the number of connections via that phone. Cellular hot spots are also frequently limited, but not generally as much as using a phone as a hot spot. In other words, you may find that for example you can only connect five cameras to your phone as a hot spot. There are ways around this limitation if needed.