Comment 7 for bug 1371032

So nestled deep in the network-test-session log is the following error:

2014/09/26 23:07:04 Cannot Activate interface on %s: %s /ril_0/context2 org.ofono.Error.NotAttached: GPRS is not attached

So, I'm thinking this may be related to the Network Manager bug that describes mobile data connections not always being activated when FlightMode is toggled off. MMS only works when "mobile data" is enabled. When mobile data is enabled, NM is responsible for toggling the ConnectionManager's 'Powered' property, which is turn causes the 'Attached' property toggle to true. So even though in this case the MMS context is stand-alone, if NM hasn't toggled 'Powered', GRPS will never become attached.

On krillin, the modem initialization sequence takes longer than mako due to the dual SIM. Of note is the fact that the ConnectionManager interface is the last to get created, and there's a few seconds lag with the other interfaces. It's been discussed that this lag is what causes NM to miss setting the 'Powered' property. I will add a network-manager task to the bug.