WhatsApp blocks logins from outdated iOS and Android versions

WhatsApp is rolling out a server-side update that blocks users from logging in on outdated versions of iOS and Android lacking the latest security patches. The change requires no app update and is being applied to specific accounts; users must update their OS to regain access.

• Login block targets outdated iOS and Android versions
• Server-side update requires no WhatsApp app reinstall
• Users cannot skip the OS update step
• Older unsupported devices may lose access entirely