The most secure and functional solution is to purchase a smartphone running Android 5.0 (Lollipop) or newer.
If you have another supported device, you can sometimes link a browser on an older tablet, though this is unreliable on KitKat's outdated browsers. The most secure and functional solution is to
If an update is available, install it immediately. This is the safest way to regain official WhatsApp access. 2. Using WhatsApp APK Mirrors The most secure and functional solution is to
(it's free).