871899 - [OPEN_][status bar] Signal always does not show full in status bar.

Status: RESOLVED INVALID

(Firefox OS Graveyard :: Gaia::Homescreen, defect)

Description

[Firefox_Mozilla]

Attachment: signal screenshot

Step to reproduce:
1.insert a sim card into Firefox Phone and turn on it;
2.in standby, observe signal;
Expected:
1.when signal is strong, signal can shown full in status bar.
Actual:
1.signal always does not show full. it always shows 3 or 4 grids.

build information:
build ID:20130426165758
build information:
gaia commit:
e25b349 Merge pull request #9273 from gasolin/issue-863126
gecko commit:
6dfd179 Bug 849757 - Part 4: xpcshell tests. r=vicamo, a=tef+
gaia commit:
e25b349 Merge pull request #9273 from gasolin/issue-863126
gecko commit:
6dfd179 Bug 849757 - Part 4: xpcshell tests. r=vicamo, a=tef+
AU:V1.01.00.01.019.085

Comment 1

[Kai-Chih Hu [:khu]]

As far as I know, Edgar is working on this. Assign this bug to him. Edgar, if you're not working on this, please feel free to remove your name from the assignee field. Thanks!

Comment 2

[Edgar Chen [:edgar]]

Share current design first.

----------------------
RIL expose two attributes for signal strength:

1. signalStrength [1]:
** Signal strength in dbm. (-53 ~ -113 dbm)

2. relSignalStrength [2]:
** Represented linearly as a number between 0 (weakest signal) and 100 (full signal).
** Please reference [3] for the translation formula.

---------------------
Gaia use a straightforward way to decide signal level via |relSignalStrength|. [4]
** 1 ~ 20:      level 1
** 21 ~ 40:   level 2
** 41 ~ 60:   level 3
** 61 ~ 80:   level 4
** 81 ~ 100: level 5

Thanks

[1] http://mxr.mozilla.org/mozilla-central/source/dom/network/interfaces/nsIDOMMobileConnection.idl#469
[2] http://mxr.mozilla.org/mozilla-central/source/dom/network/interfaces/nsIDOMMobileConnection.idl#474
[3] http://mxr.mozilla.org/mozilla-central/source/dom/system/gonk/ril_worker.js#4572
[4] https://github.com/mozilla-b2g/gaia/blob/59a4c314aa51814b75a83436ff6d3c4d46b17a5c/apps/system/js/statusbar.js#L536

Comment 3

[Edgar Chen [:edgar]]

If we want to have a more accurate way to show signal level. Maybe Gaia should use |signalStrength| to decide the signal level.

khu, is there any spec for the mapping between dbm and signal level?

Thanks

Comment 4

[Vicamo Yang [:vicamo][:vyang]]

"[e-mail]" is a shared account for people in ZTE and this account never replies needinfo request.  Please find some real person instead.

Comment 5

[Kai-Chih Hu [:khu]]

(In reply to Vicamo Yang [:vicamo][:vyang] from comment #4)
> "[e-mail]" is a shared account for people in ZTE and this
> account never replies needinfo request.  Please find some real person
> instead.

I would suggest to need info from [e-mail]. Thanks! 

Tang Juan, can you help to check if anyone is still using [e-mail]? It's very difficult for us to get replies from this account. Thanks!