Device / iso confusion

[Goddard81]

I hope this is the right place to post this, I did search to see if I could getn an answer in other threads but no dice...

I have the current version of the emulator running on 2 devices, a Galaxy s5e tablet and Galaxy s20 phone. All iso files I have work fine on the tablet but only 4 work on my phone. I'm not sure if this is a compatibility issue or what's going on, it's the same version of the same app, the same iso files but only one device they work on. Can anybody help get to the root of the problem? Thanks in advance.