Yeah I see that from Three's coverage checker (thanks for confirming we do actually have it though), but it doe's show my location as poor indoors reception - without a known good 4G phone I don't if I just have bad reception or the phone/sim/settings are not correct. I'll keep an eye on it when I'm out and about over the weekend.
Don't get too focused on the coverage checker.
Three are prone to a little bit of 'fiction' when stating their coverage.
I am a Three users of many years, for the 'all you can eat data', and the coverage at my home is supposed to be good indoors & out.
It is NOT ...... I cannot make a call if I am downstairs and even using the '3 in Touch - via WiFi' app is a bit flaky.
It is always fine anywhere whilst driving but gets flaky indoors.
I am hoping the O2 takeover will give them better coverage and signal strength. (Not holding breath just yet.

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BTW: My Phone is an LG G3, approx 14 months old, which should be more than capable of working if the signal is good. (Picks up Vodafone, O2 perfectly fine indoors

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