If you think we should have "only wi-fi + cellular" as an option, please
report it as a separate bug with use cases. It doesn't affect the
resolution of this bug report, and I mentioned it here only because
Ondrej repeatedly gave the impression of being confused about what the
current options do.

> - 4G only (slower)
> - 2G/3G/4G
>
> This is obviously wrong, yet by your logic, it is correct.

The reason it's obviously wrong isn't that the logic is wrong, it's that
the use case isn't realistic. Location use is often long, continuous
(e.g. when driving, running, or cycling), and resilient to offline
periods; a data transfer hardly ever is.

The one case where I can imagine that analogy working is if there was a
BitTorrent client, where you could "start" a download while offline, it
paused whenever you went offline, and it started/resumed whenever you
were online. In that case, yes, downloading over 4G only *would* usually
be slower overall than 2G/3G/4G -- because 2G/3G/4G would be
transferring as fast as 4G-only whenever 4G was available, *plus* it
would be transferring more of the time. But hardly any apps ever use
data like that, and I know of no Ubuntu Touch apps that do. In contrast,
most apps that use your location are still useful when you don't have a
GPS fix yet, will recalibrate automatically once you do, and don't mind
if you lose the fix occasionally. And in those periods when you don't
have a fix, GPS only is necessarily less accurate than GPS + cell + wi-
fi.

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https://bugs.launchpad.net/bugs/1421623

Title:
  Welcome wizard claims GPS is less accurate than wifi based location

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