Hi, very old topic but I have came across the same problem. Been with different network for the past year and there was no problems with my iptv service. Couple days ago I've switched to Vodafone and can't watch iptv while on mobile data. Any ideas, is Vodafone blocking iptv? If I use a VPN it works just fine.
Well it's not off by default as when you sing to Vodafone you get 3 months free trial and then 1£ a month for it.
So if you don't manually turn it off it works in the background blocking things that it shouldn't.