Hi Seat1APlease,
Had you took the time to read the whole thread (this means one comes trying to learn something beside his teching of his own), you would have learn that is totally unproven, that now or ever, the cellphone network can get trouble from fast moving handsets.
When you operate a wireless infrastructure, is not like you can base yourself on regolamentation to prevent trouble, because that alone does not prevent people to do, purposely or not, the widest range on things and tricks on your network. Like turnining on and off thousands of simulated cellphones at the same time. Or making appear a cloned phone in different parts of the network simultaneously. Or a plethora of violations on the protocol in the hope of getting free service or simply vandalism.
Networks are designed to cope with all that. The flying handsent, believe me, is the last of their concerns.