Thank you for letting me know. I personally don't play on phone so this wasn't something I was aware of until recently. I discussed this with another reader and came up with these buffs.
-> Increase the UI (if we were to increase only the text, everything would break.)
-> Increase text size (Having bigger UI makes this easier to execute, but you will now have less visibility of sprites and CGI)
-> Increase button size (I was told that pressing back with your fingers is tough and hard to click multiple times.)
-> New button to hide UI (This is to balance the smaller visibility. When you want to see something in particular you press it)