I installed Ignited via SideStore. No Jailbreaking necessary. Not computer tether. SideStore can renew the side loaded emulator every 7 days when on WiFi. The iPhone is perfect for DS emulation with a stylus.
(Ignited is a fork of Delta with more options, and SideStore is a fork of AltStore, with no computer tether needed)
iOS has a native file manager app that works quite well. SideStore is great. The one caveat is that it’s limited to sideloading 3 apps if you don’t pay for an Apple developer account $99/year I think. Also EU has passed a law forcing Apple to open his store but nothing has happened yet. We’re all crossing fingers.
If the EU does that and Apple follows through in America (doubtful), Apple will most likely have my money. I'd love to have the good parts of iPhones but I can't stand how locked down it currently is.
The native file manager kinda sucks. It's clunky and doesn't have many features. On the other hand, FX on Android is super fast and feature rich. So much better than the stock Android file manager.