There are a few already out there (https://hackaday.com/?s=cell+phone https://hackaday.com/?s=cell+phone) for proper open source mobile comms, the real problem

There are a few already out there (https://hackaday.com/?s=cell+phone https://hackaday.com/?s=cell+phone) for proper open source mobile comms, the real problem is the mobile spectrum, I had a similar whinge on my blog a few weeks ago http://rodyne.com/?p=832 http://rodyne.com/?p=832.