How to change the thumbs up icon in Facebook Messenger chat? In Facebook Messenger in the web browser or the messenger app, there is a thumbs up sticker button out by default. People I know changed it to some other icons by default, but I can't ask them how.

I don't see any option for it, yet somehow it was changed. After you change it, it will say


  &lt;person name> set the emoji to &lt;emoji here>.


Can anyone tell me how to change it?
Using Facebook Messenger, at the conversation window, go to:

Details (top-right) --> Emoji --> Pick your Emoji.

There's no option to change Emoji using the web version yet.