The Stumbler itself uses pure GPS, but the map also shows wifi-based positions (google geolocation service), if these are activated on your device.

About the dots: after the next update they are probably purple, there was a bug in the app that showed wifi-only reports as green dots instead of purple ones:
https://github.com/mozilla/MozStumbler/issues/1611

About the general issue:
I have no idea whether multi-sim works as expected, but the others are trying to figure that out.

Djfe/Felix

Am 06.04.2015 um 15:31 schrieb Victor Ng:
Hi Thomas,

The geolocation in ichnaea should be able to handle dual SIM card devices,
but that patch only landed in ichnaea in #416:

https://github.com/mozilla/ichnaea/issues/416

I'm not quite sure what is going on with that - but I've filed a ticket
over here:

https://github.com/mozilla/MozStumbler/issues/1613

My hunch is that Android is just doing something unexpected and we're not
getting the radio type properly.

Regarding your GPS fix - we just use whatever Android gives us w.r.t GPS
fixes.  It's likely that the other apps you're using are not using pure-GPS
to get a fix.  If your device is losing it's fix - the mapview will show
that.

vic

On Thu, Apr 2, 2015 at 2:29 PM, Thomas Krech <[email protected]>
wrote:

Hi!

Victor Ng suggested that I extend and post my bug report to this mailing
list.

I have a Lenovo IdeaTab A2107A-H with MTK6575, Android 4.0.3 and dual sim.
Mozilla Stumbler v1.7.11 48401df and the two versions before can't get any
cell ID; Tasker and Wifi Matic do without problems.
I even tried removing Tasker and Wifi Matic, but no change.

Also every report is marked with a green point, but only Wifi networks are
to be reported. There is no change if there is no SIM, only one SIM in the
right or left slot, both SIM cards inserted or airplane mode with wifi
enabled. My SIM cards are from Vodafone and Telekom.
I am in Germany, tested near Coburg and Fambach. Most of the big streets
(B4 and B19) there where already mapped, I drove on them too and also on
many of the smaller ones.

Tasker and Wifi Matic show the following cell IDs for Fambach
(GPS Location: long 10.36320, lat 50.73941):
GSM:1366.80625121
GSM:1366.80625125
GSM:1366.80625126
GSM:1366.80625128
GSM:3360.80609842
GSM:3360.80609846
GSM:18567.987310
GSM:18567.1005111
GSM:18567.1005806

Another annoying thing: I have to activate Google Navigation to get an
accurate and steady GPS fix. If it's not active Mozilla Stumbler loses/gets
the fix every 2-5 seconds and jumps all over the place.


Kind regards
Thomas Krech



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