There are some possible reasons why WhatsApp does not work on your Android device. Luckily, they can all be fixed relatively quickly. If the app crashes, you can not send messages, or you experience other issues, just follow the tips below to get the app up and running again.
Step 1: Limit the Issue
If WhatsApp is not working on your Android phone, first check if the issue is on your side or on WhatApp. To do this, visit one of the websites that displays whether WhatsApp is not available in which countries. You can check some of these sites using the following links:
If any (or all) sites claim that the service is not available in your country, you can only wait for WhatsApp to fix the problem. Unfortunately, failures are not uncommon for WhatsApp and other popular services like Facebook, YouTube and Twitter.
Step 2: Check your Internet connection
 If there are no reports of a WhatsApp failure, the problem must be on your side. To fix this, first check the basics. In this case, it is your internet connection. Turn off your Wi-Fi first, then turn it back on to see if this is the trick. No luck? Then try visiting a random website on the web or watching a YouTube video to see if there's a problem with your connection.
If you can not access the Internet at all, you may be too far away from your router or experiencing other Wi-Fi issues. In our special post, you'll learn how to fix these issues, or simply switch to mobile data to instantly access WhatsApp. Problem solved!
Step 3: Force stop and clear cache
If WhatsApp still does not work, the issue may only be resolved by forcing the cache to be cleared and cleared on your device. A forced stop basically ends the Linux process for the app and clears the cache to clear the temporary files stored in the app.
If you want to delve deeper into the Force-Stop feature and delete cache processes, we have a special post on the subject written by our own Gary Sims – . There is also a video for the article that you can see above.
To force-stop, navigate to your device's settings and tap Apps . Then scroll down until you find WhatsApp, open it, and tap the top of the Force Stop button. To clear the cache, tap the Memory option below and then select Clear Cache . Then start WhatsApp and see if it works properly now.
Step 4: Update or reinstall WhatsApp.
There may be a problem with WhatsApp caused by a bug in the app. It's best to update it to the latest version by tapping the My Apps & Games option in the Play Store, and then tapping Refresh next to WhatsApp. if it is available.
If this does not work or if there is no update available, it's best to delete the app from your device and then reinstall it. I'm sure you know how to do that, but if you're new to Android, you can read our deleting apps guide from your phone by clicking here.
Step Five: Disable VPN 
VPNs are great. You can hide your identity online, bypass regional content restrictions for services such as Netflix, and access WhatsApp in countries where WhatsApp is not available. However, a VPN can also be the reason why WhatsApp does not work for you.
I've received reports from users claiming that they can not make calls through WhatsApp when a VPN is enabled and some issues have arisen from other issues. So, if you've enabled a VPN while trying to access WhatsApp, just turn it off to see if it solves your problem.
Continue reading: Best Cheap VPNs of 2019 – What options do you have?
You have it – These are the five steps you should take to troubleshoot WhatsApp. I hope one of you solved your problem. If you found more WhatsApp fixes, please let us know in the comments!