Comment 9 for bug 1371032

Somehow my last comment explaining my updates to the bug went missing, so I'll try again...

Based on the network logs we reviewed, the phone is bouncing back and forth between Yoigo's network ( MCC=214 MNC=04 ) and the movistar ( MCC=214 MNC=07 ) network. This explains the occasional loss of mobile data, as unless "Data Roaming" is enabled, you will lose mobile data every time the phone roams to the movistar network. Further log analysis reveals that nuntium tries to send the MMS while roaming, which fails.

It turns out that Yoigo's network doesn't fully support UMTS and as such they have a roaming agreement with movistar to provide UMTS coverage. As we have no way to detect this, nor do we support a "national roaming" capability ( ie. allow data roaming only within the same country ), there's not much you can do other than enable "Data roaming", and be careful to disable if you leave the country. It also should be noted that if/when phones are sold in conjunction with Yoigo, that the phones are probably customized to be aware of this roaming arrangement. I will enter ofono wishlist bugs for both of these and will link to this bug.

I've assigned a nuntium task to Sergio as he's working on adding retry logic to nuntium, and also a messaging-app task to Tiago, as the messaging-app should have reported an error when the send failed.

@Victor - when you lose mobile data connectivity, does it ever come back, or do you need to reboot? If the latter, then could you open a new network-manager bug for that specific problem?