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
not an expert, sometimes play certain F95 games on mobile, and i know that "all" phones have only a certain "hard limit" for games/apps/etc and if a game/app/etc pushes the limit of the "game space/app space" the phone will terminate it on purpose because it's not "essential data"
i know for "older" mobile devices, the max "game/app" cache or whatever was 2GB in total size, and anything above that would either refuse to open or would crash constantly - - this could be the issue (note that the "game/app" cache is NOT the same as available hard drive space)
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)