I mean, #Motorola at least made the #Iridium9500 & #Iridium9505 compatible with a #CellularNetwork by offering a " #CellularCasette " adaptor that could do #GSM900 [and some could even do garbage like #AMPS & #CDMA!] so that #Iridium users could roam on #GSM inside #Cities and get #Iridium where no #CellNetwork reached them!

https://www.youtube.com/watch?v=omerPV8CPZQ

Using A '90s Satellite Phone On The Iridium Network

YouTube