I've had an issue over the past few weeks where app take ages to load or doesn't load at all over wifi. If I turn WiFi off, it's all fine. Same issue with my Tab 7. Othe devices seem work ok (iPhones, laptops etc). Tried resetting network, devices.
I use EE and Three as my (mobile) broadband and I can't knock them, for streaming to the TV etc. On my phone though I just use EE and I can understand why they claim to be the UK's best network. Although Three must of done some upgrading to their network. I won't hold my breath on that!
3 is good. I have O2 since Virgin merged it's really bad the family use Virgin/ O2 and its the same where they live. Drops out when roaming. Sky is OK, but limited down load speed. City Fibre is now to the door so may try them