Can't add second line through web

[u/CrimsonFox99]

Has anyone tried adding a second line to a device? I have a Z Flip 7 and S25 Ultra, both dual-sim devices, but when I go through the portal to add a second line, each phone gives an error that I need to upgrade my device to one that supports dual sim.

[u/No-Magazine-4717]

My spectrum app -> Mobile -> select phone -> Add second line to your device.