Bro, you are doing a very good job, I love the idea, the theme and the mechanics it has.
But there is another bug, about the numbers on the phone.
I don't know when it occurs but it may be random with very little probability or executing a series of specific actions.
It consists of that when you want to call any of the numbers below the first one, the screen goes black and does not let you do anything but call the first one, that if it works well.
PD: The other bugs that I found are those already commented on by other users.
PDD: I don't speak English, but I understand it, sorry.