This app was mentioned in 4 comments, with an average of 1.25 upvotes
Results will probably vary. I can tell you from experience with SG on PC that a lot of the time wifi isn't really that bad, hell I've had better results with it than playing any ArcSys game on wired. Rollback is actually a lot more tolerant of wifi than delay, because the whole point of rollback is that it can run ahead without the opponent's inputs instead of having to stutter or slow down if a packet gets lost.
SG now letting you see jitter too helps identify an okay wifi connection versus a bad one, though I don't think Mobile has this. It's not that wifi is always universally unplayable, it's just that it's not as good as ethernet even in the best case scenario, and that every wifi user always thinks theirs is the good one.
I haven't tried it yet but apparently Dual Souls just got updated with rollback and PC-Android crossplay. Kinda forgot about this one, bought it in Early Access forever ago but seemed like development had stalled until just now. You could go ahead and run some tests on that if you want.
You mean this one? https://play.google.com/store/apps/details?id=slashers.android
Only legit fighter I know that is on Android is Slashers.
https://play.google.com/store/apps/details?id=slashers.android