Messenger delay on Wi-Fi

[Android Central Question]

Hi, whenever I'm on Messenger on Wi-Fi sometimes I receive people's messages up to an hour later, this happens on every Wi-Fi I'm on, but when I use data it works perfectly well. (Samsung galaxy s7 edge)

 

[tomasz1984]

I have spotted it too, on Samsung Galaxy S6. Do you think it is a Samsung related bug?