I switched to unlimited data and now I’m having issues with data being slow, Apple Music not loading

[Catrin111]

Data upgraded to Unlimited and now it's not running as usual, it's slow, not always working when I have 5G and full bars. My Apple Music isn't playing either (I had issues with this years ago and it was sorted now the problem is back again). I've had nothing but issues since switching to Sky mobile. EE seems like a much better network 

[Catrin111]

Also to add, I know it's a Sky issue because my apps  function fine when I hotspot to an EE phone