The Nothing Phone (3a) Pro has a periscope-style 3x third camera on the back, while the vanilla Phone (3a) has to settle for a regular 2x zoom shooter. Of course, there are some design differences on the back side of both phones, but that's about it. So, suppose you don't particularly care about the telephoto camera. In that case, you can read the following pages and be sure that the observations also apply to the vanilla Nothing Phone (3a).