I obtained my SIM last week. Since then, indoor coverage has been very poor (250Kb/sec, according to fast.com)
I checked outdoors, moving around all sides of the house - there are no other buildings within 40m and all are 2-3 storey. Coverage is still only 1Mb/sec. A mile away, coverage is much better - 12Mb/sec.
My postcode is BS6 5EX, your map indicates coverage in my area is ‘very good’. Can you advise please