snake 2 was the best! When I bought my first cell phone from Radioshack and I told them it had to have snake, the sales lady was flabbergasted that I cared about having games on my phone.
Pagers and cells were banned in my high school. If you needed to make a call you use the pay phones and the parent can call the office. Never been an issue.
But at the very least keeping cell phones basic and only for calls would at least help.