Follow the steps below to install the Steam Guard Mobile Authenticator:
1) Install the Steam application for your mobile phone:
2) When the application installation is completed
3) Select Steam Guard from the upper left menu of the application
4) Select the Add Authenticator button
5) Enter the number to receive the authentication key
6) Enter the authentication key sent to the entered number into the activated application screen
7) Check the recovery code as the recovery code is valuable information that is essential
when you lost your Steam account or lost your Mobile Authenticator.
8) The setting is completed. Every time you log in to Steam,
an authentication key is sent to your registered mobile device.
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