If you can't connect to WhatsApp, this is usually caused by a problem with your Internet connection or your phone's settings.
Most connection issues can be resolved by doing the following:
- Restart your phone, or turn it off and on.
- Update WhatsApp to the latest version available on the Google Play Store
- Open your phone's Settings > tap Network & Internet > toggle to turn Airplane mode on and off.
- Open your phone's Settings > tap Network & Internet > Data usage > toggle to turn Cellular data on.
- Open your phone's Settings > tap Apps & notifications > App info > WhatsApp > Data usage > toggle to turn on Background data.
- Open your phone's Settings > Network & Internet > Wi-Fi > toggle to turn Wi-Fi off and on.
- Try connecting to different Wi-Fi hotspots.
- Make sure Wi-Fi stays on during sleep mode.
- Reboot your Wi-Fi router.
- Contact your mobile provider and make sure your APN settings are configured correctly.
- Upgrade your Android operating system to the latest version available for your phone.
- If you're having trouble connecting to WhatsApp while on a Wi-Fi network that you don't normally connect to, contact the network administrator.
- If you're on a campus or corporate Wi-Fi that has firewall restrictions in place, contact the network administrator.
- WhatsApp isn't designed to be used with proxy or VPN services, so we can't provide support for those configurations.
For issues with receiving notifications for WhatsApp messages, read this article.
Learn how to troubleshoot connection issues on: iPhone | Windows Phone | Nokia S40