Yeah, I have never played a game on a phone, but check to make sure you have the most updated version of the app and Ren'Py, but otherwise, it could be the phone isn't enough to run something that size. Using Joiplay is already tricking the phone into doing something it was not intended to do.I'm on android if thats what you mean. Basically what happens is I have to save every few scenes because it closes on its own after a few moments of play. Theres really no set time sometimes it might take an hour sometimes jus 2 mins
I would also suggest trying to use the crunched version.
The 'uncompressed' one we get is actually already compressed, the actual uncompressed one would be between 100-200gig.the game has been around for over 6 years of updates and the uncompressed version is over 11GB, even compressed for mobile, it might just be "too big" for your android platform (i've had what seems like the exact same issue for "bigger" F95 games)