So I thought I'd come in and put my experience with the 920i here. I'm a tech journo who picked one up and I can confirm that although it is listed as an option in the hidden service menu, LTE Band 20 (aka 800MHz) does not work.
Having tested with EE, Vodafone and O2, I can say that EE picks up 4G on Band 3 (aka 1800MHz) but Vodafone doesn't pick up 4G at all as its Band 7 (2600MHz) coverage is spotty and it doesn't pick up Band 20. If you're looking to use an N920i on Vodafone or O2, LTE will be very limited on the former and it won't work at all on the latter.
If you want LTE on EE or Three, it'll work on Band 3 or Band 7 and while EE is pretty good for both of these (I don't think it's started rolling out Band 20 widely), Three LTE will be limited to just Band 3 and it doesn't have a lot of this spectrum.
The 2 cents version:
EE : Good coverage, very good speeds
Vodafone: very very very limited LTE
Three: very limited LTE
O2: No LTE at all.
Hope this helps clear this up - I've tested this with multiple Sims etc for over an hour to come to the findings above and my knowledge level is sufficient enough to understand the inner workings of a network and the frequency bands (having worked as a technical advisor for three networks).
This was sent from my Note 5 SM-N920i running EE LTE on Band 3 at 60Mbps down, 12Mbps up in West London btw. Yet to pick up 4G+ but this is something I'll test soon and report back.
- Which model of the Note 5 is this? I can't seem to find the info on the Bell website, N920C? possibly?
