There's a lot on this forum about Three and EE 4G broadband but not about O2. I currently use EE getting about 7-8 Mbts download from a non-line of site mast. We have an O2 mast in line of sight from which I can get about the same speed without using the external antenna which is on EE.
I think if I hook up an external antenna I should get a better speed with the O2 but has anyone any experience of using O2 as a home broadband service (the sim works OK in my Archer MR200 router)? Would buying a data only sim work?