ubuntu-phone team mailing list archive

[Jacob Nielsen <snobel@xxxxxxxxxxx>]

I have an MX 4, currently on rc-proposed. Bug #1449990, or something 
very similar, affects me as well.

Output from list-operators:
[ /ril_0 ]
    [ /ril_0/operator/23802 ]
        MobileCountryCode = 238
        MobileNetworkCode = 02
        Name = Telenor DK
        Status = available
        Technologies = umts

    [ /ril_0/operator/23866 ]
        MobileCountryCode = 238
        MobileNetworkCode = 66
        Name = Telenor DK
        Status = current
        Technologies = gsm umts
    [3 entries removed]

MCC 238 is Denmark. MNC 02 is Telenor, MNC 66 is the united networks of 
Telenor and Telia (tt-network.dk). My carrier is an 'MVNO', OK Mobil, 
who's using Telenor's network. Unlike the bug above, in this case the 
network name is the same for the two entries. (The 02 network sometimes 
shows up as just "Telenor" for some reason. I can still connect, and 
then the name will change to "Telenor DK" in the carrier list.)

The networks should be considered equal by the phone. But when set to 
select a carrier automatically the phone will always choose the "66" 
network and then insist it's roaming - which means no data connection, 
as data roaming is switched off. Through the carrier list I can manually 
connect to the other network and get data - but the phone will always 
eventually reconnect to the "66" network on its own, even if left 
stationary.

(There seems to be no noticeable difference in signal strength between 
the two networks here. Why will the phone prefer roaming to a network 
that can't provide data, when the network matching the SIM is available 
and not significantly weaker?)

From comment 6 on bug #1449990: "When you are registered in a network 
with different MCC/MNC codes to the ones in your SIM, you are roaming 
unless the MCC/MNC of the network you are registered to is in a list 
that is stored in a file on the SIM." Makes sense - yet my old SIM, 
which pre-dated the Telenor/Telia cooperation, worked as expected in my 
Android phone when using the same settings (data on, data roaming off): 
There'd be two 3G "Telenor DK" entries in Android's carrier list, one of 
which had a home icon. I could select either and get a working data 
connection.

When I contacted OK Mobil about this they provided me with a new SIM 
card (for free - as an exception). Unfortunately the phone's behaviour 
is the same with the new SIM.

Can I do anything to help fix this? I'd lobby for that bug to be moved 
up from 'wishlist' status, as this issue means that for the time being 
I'll have to stick to Android for my daily device.

Regards,
Jacob Nielsen