What Android app do you use for video calling?

If you've ever used an iPhone, you'll know that FaceTime is the go-to app for video calling/chatting. It's built into iPhones by default, works incredibly well, and is used by just about everyone.
On Android, however, things aren't quite as ubiquitous. Recently, one of our forum members posted a problem they ran into:
https://forums.androidcentral.com/showthread.php?t=970570&p=6589074&viewfull=1#post6589074
So, what's an Android user to do? Another person recommended the following:
https://forums.androidcentral.com/showthread.php?t=970570&p=6589088&viewfull=1#post6589088
That's a good start, but now we want to hear from you. What Android app do you use for video calling?
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Joe Maring was a Senior Editor for Android Central between 2017 and 2021. You can reach him on Twitter at @JoeMaring1.