If your phone’s clock is wrong, WhatsApp will refuse to connect. Set it to "Automatic" in settings.
If the app is laggy, go to Settings > Apps > WhatsApp > Storage and tap Clear Cache . A Quick Note on Compatibility hot download whatsapp for android 601
If the Play Store is unavailable, visit the official WhatsApp Android download page from your mobile browser. Tap to get the APK file directly. If your phone’s clock is wrong, WhatsApp will