Mobile app can't connect to Battle.net over mobile network

[Tratt-proudmoore (Tratt)]

Hi Moriiniis

There have been a good number of reports of this. Looks like issues with T-Mobile and the Blizzard system. Check this thread:

Companion app not working

I have a Oneplus 7 Pro and the app is not working. Everything else works fine. I’ve reinstalled the app multiple times. Here is a video of what it’s doing.