Not Just butt dials.....
I did an accidental Call to emergency services while I was on the phone. I was working my way through a series of options whilst on the phone to an insurance company. It just so happens that the my first option was 1, next option was 1 and the option after that was 2. Without me knowing this activated the European 112 emergency call. I don't know if my face hit dial or if it auto called once it detected the phone was upright and against my face again all I know is that I had a very confused, then very angry 999 operator who wasn't at all helpful with my insurance question.
So if this function must remain then 112 should be replaced with something with a 9 in it to reduce the likelihood of automated phone systems kicking it. If a phone system had 9 options then I think they should be at the sharp end of some legal recourse anyway.