It doesn't have to be, the PinePhone's modem runs a proprietary Linux distro, which you can replace with an open source Linux distro. That is only the ARM proce

It doesn't have to be, the PinePhone's modem runs a proprietary Linux distro, which you can replace with an open source Linux distro. That is only the ARM processor of it though, the Hexagon one is all proprietary. https://github.com/the-modem-distro/pinephone_modem_sdk/ https://github.com/the-modem-distro/pinephone_modem_sdk/