Firebase servers not reachable when using mobile phone data (3g/4g)

Question

I was running some FireBase tests and suddenly I realized Firebase was not working anymore when using mobile data from Chile. At the beginning I thought the problem was my app so I tried to open a Firebase official example but I had no luck (office-mover-demo example). This is what I tried:

I connected the phone to my home wifi connection and FireBase works :) I shared the phone’s internet connection to my computer and it did not work :( . This is the error y receive.

I emailed Firebase support and they sill don´t have an answer to this strange situation. I asked people from The Netherlands and Mexico City to try and realized the problem was only happening in Chile :o . It’s like FIrebase URLS (http://firebase.com , firebaseapp.com ) are not reachable from Chile using mobile data plans! Does anybody have any clue ?IMAGE OF THE JAVASCRIPT CONSOLE OUTPUT

Answer 1

I had same problem in egypt/vodafone 3g both in iOS and web too, for now am using VPN apps, once I turn on vpn firebase DB starts working :D :D

looks like it has to do with web sockets.