Please stay on topic! On a sidenote a phone with FOSS GSM stack is illegal to operate, everywhere except in anarchies where they won't have any network provider to use it in. Please stop spreading false claims here! A GSM stack needs certification and that has to be done even by the network operators. Operating a transmitter is basically illegal everywhere on the world without a licence to do so. I'd appreciate when you simply would delete your posts. They are incorreect and OT.