touch-packages team mailing list archive

[Matthew Paul Thomas <mpt@xxxxxxxxxxxxx>]

(Pat, thanks for the screenshot of the first-run setup.)

The "Location" screen in the first-run setup presents exactly the same
choice, in the same amount of screen space, as the "Location" screen in
System Settings. <https://wiki.ubuntu.com/Location> On Windows and Mac,
it is standard for wizards/assistants to start a screen with a question,
e.g. "How would you like the phone to detect your location?", where a
non-wizard/assistant UI for the same thing would use an imperative
label, e.g. "Let the phone detect your location:". We might choose to
follow that pattern for our first-run setup. If we did, the first piece
of text would be different from System Settings. But with that possible
exception, I think the controls+text in the two screens should be
identical. In other words, it would not make sense for this bug report
to be resolved one way for System Settings and another way for Unity 8.

(Currently the setup and System Settings screen use an identical intro label, but different controls -- radio list vs. checkboxes -- and slightly different text. None of this seems to be intentional; it's merely an architectural flaw, in that there are two implementations of the UI, which have inevitably drifted apart.
<http://bazaar.launchpad.net/~unity-team/unity8/trunk/view/head:/qml/Wizard/Pages/50-location.qml#L58>
<http://bazaar.launchpad.net/~system-settings-touch/ubuntu-system-settings/trunk/view/head:/plugins/security-privacy/Location.qml#L93>)

With that said, I don't see any reason to doubt what I said before, that
"GPS alone is less accurate than GPS + Wi-Fi + cell tower data". Yes,
Ondrej, GPS would be more accurate than *just* Wi-Fi + cell tower data
-- but just Wi-Fi + cell tower data is not one of the options! If you
think it should be, then report that separately.

To put it another way, time can be divided into two periods: before the
phone gets its first GPS fix, and after. Before, GPS-only is infinitely
less accurate, because it has no idea where you are at all. Afterwards,
the two methods are mostly identical, except in places like basements or
Tube stations, where GPS-only is still less accurate.

Given the limited screen space, I still think it's reasonable to have
summarized "infinitely less accurate some of the time, and occasionally
less accurate the rest of the time" as "(less accurate)".

-- 
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 the base for Ubuntu mobile products:
  New
Status in Ubuntu UX bugs:
  Triaged
Status in ubuntu-system-settings package in Ubuntu:
  Invalid
Status in unity8 package in Ubuntu:
  New

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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