O2

Recently I upgraded (Monday) and returned my upgrade to the store where I bought it on Wednesday (for some reason the network got worse with a newer 5G device for me) and I can see I am still on the new tariff 36 hours later. So I am wondering how lo...

Hi, I joined o2 3 months ago (paid my third bill today on a 12 month sim only) and can now only see this month's bill and can't see the last 2 months. Also, when getting my SIM card, I was told I could upgrade either 3 months or 6 months into the agr...