Public bug reported:

For some operators, Status is wrongly reported as "roaming" for a few
milliseconds before changing to "registered". Although this should be
handled fine by the system, it can lead to status shown as "roaming" for
a small amount of time in the GUI, due to the signals emitted by ofono.
In the logs reported in LP bug #1371032 it can be seen that this
happens:

2014-09-26 20:11:18,643 {NetworkRegistration} [/ril_0] Status = roaming
2014-09-26 20:11:19,323 {NetworkRegistration} [/ril_0] Status = registered
...
2014-09-26 20:16:31,743 {NetworkRegistration} [/ril_0] Status = roaming
2014-09-26 20:16:31,803 {NetworkRegistration} [/ril_0] Status = registered
...
2014-09-26 22:03:43,743 {NetworkRegistration} [/ril_0] Status = roaming
2014-09-26 22:03:43,779 {NetworkRegistration} [/ril_0] Status = registered
...
2014-09-26 22:10:58,077 {NetworkRegistration} [/ril_0] Status = roaming
2014-09-26 22:10:58,104 {NetworkRegistration} [/ril_0] Status = registered
...

The reason for this is that the modem reports the status as roaming, but
it is being corrected by ofono after checking the content of SIM files.
Unfortunately, a signal reporting the roaming status is broadcasted
before that happens.

** Affects: ofono (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1377148

Title:
  Wrong roaming status for a few milliseconds

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