No, I don’t think that the levels become harder. They also gift so many free boosters to the players that it is way easier than 10 years ago when I first played the game.
I also feel like that after failing a level too often, that the game is cheating for you so that you don’t lose interest.
It is still possible to unlock an android phone with a fucked screen.
I had to do this once and managed to unlock the phone with a USB mouse. It took me a while to get the right pattern, but it is possible.