@Gi7 Officially there are no device limits. That said, there’s some common sense to that in terms of antifraud. The browser is here for casual use on normal devices, it’s not meant to install on hundreds or thousands of devices to “farm” or “mine” BAT or to have it on a device where you use automation to try to maximize earnings.
Putting on multiple phones or computers is fine. Again, just for normal and casual usage. It’s only when you abuse things that it becomes a problem.
They consider “normal” usage for a person. If it exceeds that to a very abnormal amount of devices and activity for a person, then it likely becomes fraud or abuse. If you just casually use Brave, you should have no issues. But if you’re trying to install on tons of things or frequently use it as a source of income, you’re likely to get yourself in trouble.