Device / iso confusion

[Goddard81]

I'm in a state of confusion, I have the current version of the app on both my galaxy s5e tablet and my galaxy s20 phone, I have a couple of dozen games in iso file format which all run fine on my tablet but only 4 of them run on my phone. Same app, same files, the only difference is different devices (and the one I Want to run them on isn't the one that they work on). I hope this thread is in the right place and that someone can help me.