It's the 8BitDo Ultimate Mobile Gaming Controller and it's very nice. I previously had some no name cheap rickety telescopic controller which did the job but this is a legitimately great feeling pad.
The buttons and dpad all feel excellent, the sticks are Hall Effect which means no drift and the triggers are analog. The shoulders and triggers feel really satisfying to press, especially after the ones on my old phone controller that were so flimsy they were downright nasty. It's got two programmable back buttons too in case you need those.
It seriously feels like a first party level controller with no compromises. Well, almost. First, there's no rumble which is the only thing keeping me from using this on my desktop more (which you can do just with a USB cable, no Bluetooth pairing required) Second, and this is a really minor thing, but due to the compact layout compared to a regular controller, I can sometimes feel my thumb brushing against the right analog stick when reaching down to press A.
It's also really inexpensive. It usually goes for a little over 40€ on AliExpress but I managed to get it for closer to 26 euros which isn't that much more than I paid for my old piece of junk. Thanks to this thing I've been emulating stuff on my phone way more again these past few weeks. It almost makes me want to pick up a full-size 8BitDo for my computer, which I hear easily rival or even surpass Xbox controllers in terms of quality these days
P.S oh yeah, no gyro either
Oh I may be finally able to enjoy Symphony of the Night on the phone. Touch controls are the bane* of my existence.
I don't think you could use those with anything other than very old school JRPGs or visual novels or something
Gen alpha and gen z have a knack for it from being iPad/iphone Natives, but for sure it is a pain to learn.