WhatsApp Begins Blocking Logins on Older Android Phones and iPhones

WhatsApp is rolling out a new security measure that prevents users from signing in to their accounts on devices running older versions of Android or iOS, according to reports.

The restriction is being applied on the server side, meaning WhatsApp is enforcing it through its systems rather than relying solely on changes to the app installed on a phone.

The reported measure targets devices based on their operating system version. It could therefore affect both older iPhones and Android handsets that remain on outdated software.

The available details do not specify which Android or iOS versions are affected, when the rollout will be completed, or whether users already signed in will lose access.