ModemManager isa system daemonwhich controlsWWAN(2G/3G/4G/5G)devices andconnections. AlongsideNetworkManager,ModemManager isthe defaultmobilebroadbandmanagementsystem in moststandardGNU/Linuxdistributions(Debian,Fedora, Ubuntu,Arch Linuxβ¦),and is alsoavailable incustom systemsbuilt with e.g.buildroot,yocto/openembeddedor ptxdist. ModemManagermay also beused in routersrunning openwrt(integratedwith netifd asa new protocolhandler), or tomanage bothvoice and dat