Re:My open-source, do-it-yourself cellphone (2013)
by Gregordinary on Wednesday June 08, 2016 @02:00PM
(#11864167)
The FreeCalypso Project is working on a libre phone. Looks like they're using a baseband processor from a TI Chipset.
There is an open GSM base station system though, OpenBTS. But you definitely can only use that for testing.