I had the on-demand NFL Sunday Ticket last year and loved it. I watched most games on the XBOX One and few on my laptop. Never had an issue.
This year I bought the add-on Game Pass.
The Scenario... I'm home working in the garage trying to watch a game on my phone. My Internet is 150M/150M Frontier FiOS. I just tested with the app Speedtest on my iPhone (6S) to check me WiFi connection and the results were... PING: 14ms, Download: 142.92Mbps, UPLOAD: 164.41Mbps.
Here's the problem... It's choppy on my iPhone (6S)... So much it's unwatchable.
I checked my storage on the iPhone... I have 1.36GB Available.
I stopped all apps.
I restarted my iPhone.
Now I click to watch the game... for a split second it acts like it's going to start then back to the screen that says "Available on NFL Game Pass". Really? Duh! I'm trying to watch it. So I click again. No luck.