> There was already a battle between AT&T and people who dared connect phones they actually owned to the phone network, and it ended well for the general public

> There was already a battle between AT&T and people who dared connect phones they actually owned to the phone network, and it ended well for the general public and badly for AT&T. The now reformed SBC/AT&T is doing something similar - only devices on this list[0] can connect to their VoLTE network. Without registering for VoLTE, the phones will not be able to connect to the network. Even if a phone has full VoLTE compatiblity (the OnePlus 6 series, for example), if the manufacturer does not work with (read: pay) AT&T for certification, it will not be allowed on their network. This is illegal under California SB822[1], which among other things prohibits the blocking of "nonharmful devices" on networks - but AT&T, along with the other major carriers, are currently acting like this doesn't exist until they're forced to by abide by it by a court of law. [0] https://www.att.com/idpassets/images/support/wireless/Devices-Working-on-ATT-Network.pdf https://www.att.com/idpassets/images/support/wireless/Device... [1] https://leginfo.legislature.ca.gov/faces/billTextClient.xhtml?bill_id=201720180SB822 https://leginfo.legislature.ca.gov/faces/billTextClient.xhtm...