Could you elaborate on tools?You should verify that you are getting a new IP after you reset the network. Using a cell phone is completely fine for creating accounts provided you are getting different IP addresses. But you shouldn't be using a single phone to manage your accounts and leave reviews that way. Plenty of tools out their for Windows/Mac/Linux.
And a single burner phone is no good for 20+ accounts/reviews?
You mean firefox, wrtc disable, antitrack etc.
Im a little confused on proxies however, im trying to find canadian proxies for cheap as i only need like 20 accounts.