[tcfhgj]

you have to have an account, with mobile number

[nijave]

Are you sure? I seem to remember Discord requiring an email but not mobile number

I know Telegram absolutely requires a mobile number, though

[bmandale]

It will sometimes let you register without a phone number, but other times it will demand one. I imagine it has to do with IP reputation and how many accounts have been created from your network recently.