Unable to join using mobile data.

I am unable to join my friend's realm using mobile data. I am only able to join it when I am using Wi-Fi. I have enabled "Allow mobile data for online play" but I still get stuck on the loading screen.
My other friends play using mobile data and are able to join. My internet connection is good as I am able to play other games and watch HD videos without any buffer.
Please help, I don't how to fix this issue. I tried many things.