[josinalvo]

I did not root my phone yet, and I install apps with f-droid just fine. The only thing I had to do, if I recall correctly, was enabling third party apps instalation

[lol768]

Try it again and watch the process closely. You'll get an additional prompt when you use F-Droid that doesn't appear with the Play store.

[josinalvo]

Indeed there is an extra confirmation step, and it freezes some processes (specifically, those that alter the screen, like red shifters)