touch-packages team mailing list archive

[Matthew Paul Thomas <mpt@xxxxxxxxxxxxx>]

"From all location providers available, GPS is most accurate one,
unfortunately also most power hungry and slowest to gain lock. This is
reason we use all other providers to get faster, though less accurate,
coarse location using combination os visible wifi access point and
cellular cells."

As I have said three times now, just Wi-Fi + cellular network info is
not one of the options. It is in Android, and both Rex and I have
mentioned here the possibility of adding it to Ubuntu -- but right now,
it is not one of the options. If it was, you would be correct: you could
save power by not using GPS. But the choice is between GPS only, or GPS
+ Wi-Fi + cellular network info. Since both of them use GPS, neither of
them save power by not using GPS. And after seven months, you have still
not given a single example of any moment where GPS only could possibly
be more accurate than GPS + Wi-Fi + cellular network info, while I've
given multiple examples where the opposite is true.

Your GPRS analogy fails for the same reason: "GPRS only" is not one of
the available options, just like "Wi-Fi and cellular networks only" is
not one of the available options.

The reason we provide multiple options, as explained in the UI, is
nothing to do with power use. It is simply that the HERE option requires
you to accept HERE's terms and conditions, while the GPS-only option
does not. If we didn't care about providing location detection for
people who don't want to accept the terms and conditions, we could just
use HERE as the only option, make location detection an on/off toggle
(like in iOS), and not need any further settings.

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to unity8 in Ubuntu.
https://bugs.launchpad.net/bugs/1421623

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

Status in Canonical System Image:
  New
Status in Ubuntu UX:
  Invalid
Status in ubuntu-system-settings package in Ubuntu:
  Invalid
Status in unity8 package in Ubuntu:
  Incomplete

Bug description:
  First boot welcome wizard in location sections claims GPS is less accurate than network based location service from HERE.
  While this can be theoretically true in some insane corner case, in normal life GPS is far more accurate.

  To help form correct text here are main differences.

  GPS - more accurate, but slow to acquire fix, does not work indoors,
  drains battery more, no need for internet connection, does not send
  any data out.

  Network based location - almost instant to get coarse location, works
  indoors, accuracy depends on network coverage in the area, more power
  efficient, requires internet connection. To get location data about
  visible GSM network and wifi networks needs to be send to 3rd party
  server.

  tested on krillin vivid-proposed r107

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