That will also prevent people on the bus from using their cell phones. I hate distracted driving too, but yours isn't an acceptable solution.
So what? Somehow the world survived for thousands of years without having people use smartphones on buses. It's amazing how entitled people get. I assure you you would survive the experience of not being able to use every feature of your phone for a few minutes. Furthermore there would be nothing preventing you from using a wifi enabled device like a tablet on a bus. It just means you aren't going to be texting or making phone calls while the vehicle is in motion. The point is to keep people from making calls and texting and similar activity while in motion.
I reject the premise that your right to play with your phone is more important than the right of people to travel without fear of dying because some idiot cannot pull off the road to send a text message. If you have a better solution to keep people from literally causing deaths then I'm all ears. Right now forced disabling during transit seems to be the only solution that would actually work. I agree that it isn't an ideal solution but I have yet to hear any other solution that would actually fix the problem.
Oh and I have no illusion that this will become a reality. I'm just pointing out that forced compliance is the only solution that would actually work. I don't see it actually happening.