Sadly, many companies now require a phone number to use their services. For example: Signal, Telegram, Whatsapp, social networks like Instagram and Vk. They don

Sadly, many companies now require a phone number to use their services. For example: Signal, Telegram, Whatsapp, social networks like Instagram and Vk. They don't like anonymous users. For some users, Google requires a phone number to sign up. Twitter requires a phone number if they see something "suspicious" in user's behaviour.