Why does the map show I have extended 5G coverage when half thr time I have no coverage to only one bar and it is usually AT&T?
Best answer by formercanuck
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Extended coverage is basically domestic roaming. Depending on what AT&T has deployed in that area. It might be an issue of compatibility with your device and the roaming partner or just exceptionally poor coverage by the domestic roaming partner.
‘Extended Range LTE’ ≈ LTE 600MHz/LTE 700MHz, basically meaning … you’re in a fringe or ‘No Service’ area.
If you went to the FCC’s “new” mobile coverage map, you’d most likely see that area (drilling down) as ‘No Service’. T-Mobile’s customer map over exaggerates ‘fair’ coverage , and often includes large areas that have no service. I’ve compared the 2 in areas where I have ‘No Service’ and T-Mobile shows either 5G or 4G LTE extended range. In those areas, FCC’s maps are pretty much on the mark for ‘No Service’, while T-Mobile fills them all in.
In some areas .. you may end up on a roaming carrier like AT&T. Eg. Gaviota State Beach, CA … T-Mobile shows 4G LTE, it used to have 2G only. FCC shows ‘No Service’. I end up with AT&T roaming or Verizon SoS.
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