Unlike Overwatch 2, Modern Warfare 2's mobile phone requirement is

Console players aren’t subject to the same SMS security policy as PC…

CoD: Modern Warfare 2 will share Overwatch 2 phone requirement - Softonic

Starting October 4, 2022, all players across all platforms, including consoles, are required to have a phone number attached to their battle net account to launch Overwatch 2. : r/overwatch2

Blizzard: Blizzard SMS Protect system: Call of Duty Modern Warfare 2 to use this new verification tool - Times of India

Call of Duty®: Modern Warfare® II - Call of Duty

Unlike Overwatch 2, Modern Warfare 2's mobile phone requirement is PC-only, cod 2 modern warfare system requirements

CoD Modern Warfare 2 (2022): Everything to Know About Release

Call of Duty: Modern Warfare II Editions, Benefits Detailed [Updated] — Call of Duty: Modern Warfare II — Blizzard News

Overwatch 2 Season 9 Premium Battle Pass

Activision Is Reducing Warzone and Modern Warfare File Sizes By Up to 33GB