The Steam Guard Mobile Authenticator allows users to have an extra layer of security. Streaming your favorite games just got a lot easier with the launch of the Steam Link app for Android. Steam is a online distributor of games and is a communication platform, developed by Valve Corporation. Steam is a popular multi-player platform used to distribute games and related media online. Just use one of the phone numbers below and use them for STEAM phone / SMS verifications. If you need to contact Steam Software customer support agent, you need to send a message via Steam Community Help. A smartphone, either Android or iOS will do. It also distribute Game related media. ※ In order to enter Ranked Mode, players must verify their game accounts using a mobile phone number. : You can link one Steam account with one phone number. While you are already adding a phone number to play, it is more than recommended to add Steam Before we can turn on your Steam Guard Mobile Authenticator, we have to add your phone number. Anyway, if you still have the Steam Guard app on your phone you can still use it without requiring In order to change your phone number you can choose between a SMS to your old number or that app. phone_number (str) - phone number with country code.