Bad speed on data

[MindOfTim]

I have been using o2 for years and my house and garden have always had very quick speeds both on 4G, and as of last year 5G. This changed around a month ago when I noticed my phone dropping from 5G to 4G often but having really slow speeds regardless of which it was using. It takes sometimes minutes to load a Google search and the signal seems to be less a lot of the time here now also (I assume this is related).

O2 say theres no maintainance or cell tower issues so im unsure what i can do (if anything) to figure out why it is like this. Is there any settings I can change to see if thar solves the issue? I haven't changed phone or sim card recently 

[MI5]

@MindOfTim 

Check the guide here to see if anything helps. 

Guide: How can I sort out my network issues? 

[Ssl22uk]

Same issue here. My mast is shared with Vodafone and it’s got a fault. Was better on 5G, but they’ve turned it off or down. 12 days on and I’m still none the wiser. 

[Ssl22uk]

Ps still can’t make or receive calls at all in the EU. But strangely my data is fast and ok.