It's not just about hosts. In developing countries, old generation mobile phones running Android 4.x are extremely common. Google's own metrics show 26% of Andr

It's not just about hosts. In developing countries, old generation mobile phones running Android 4.x are extremely common. Google's own metrics show 26% of Android phones are pre-5.0, and that's without the unknown number that don't have Google Services installed. EDIT: Seems the last version of Android 4 does support TLS 1.2, but there's still a non-zero amount of users on older versions.