Switch from WiFi to 4G or vice versa depending on what you’re using when the app crashes.

Usually, the app would just run slowly and take forever to send a message but I have seen it crash the app. WhatsApp should be comfortable using WiFi or 4G but a poor signal may be the cause. You can then work with that one change or installation to see how it affects WhatsApp. If you made several changes, undo them one by one to see which allows WhatsApp to begin working again. If you made a change, undo it and retest. Or it could be a new app that interferes with WhatsApp or locks down the files or hardware WhatsApp needs to operate properly. Have you updated Android? Installed any new games or apps? Made any significant configuration changes? Done anything to your phone around the same time as WhatsApp began crashing? It isn’t always the app at fault but perhaps another change on the phone. As it only takes a few seconds so it’s worth trying. It forces a reload of memory and of the app files and starts afresh. A quick reboot of your phone could be enough to have WhatsApp working properly again.

Whatsapp video call android