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Modern Warfare 2 phone number bug: How to fix the Warzone 2 "Mobile Phone Number Required" Steam issue

For those who can't play Modern Warfare 2 on Steam because they can't get past the Mobile Phone Number Required verification step, here's how to fix this issue.

September 22, 2022 · 1 min · 37 words · Joseph Vincent

Simply unlink your phone number from your Steam account, and re-add it.

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A black screen in Modern Warfare 2 with text asking the player to verify their mobile phone number on Steam.

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