ubuntu-phonedations-bugs team mailing list archive

[Pat McGowan <pat.mcgowan@xxxxxxxxxxxxx>]

** Changed in: canonical-devices-system-image
     Assignee: (unassigned) => Michael Frey (mfrey)

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https://bugs.launchpad.net/bugs/1379412

Title:
  SIM selection for mobile data is non-deterministic

Status in the base for Ubuntu mobile products:
  Confirmed
Status in Ubuntu UX bugs:
  In Progress
Status in ofono package in Ubuntu:
  Confirmed
Status in ubuntu-system-settings package in Ubuntu:
  Confirmed
Status in ubuntu-system-settings package in Ubuntu RTM:
  Confirmed

Bug description:
  Our current implementation of SIM selection for mobile data is
  currently ( as of RTM #94 ) non-deterministic.

  If two SIMs are installed in the phone at first boot ofono will self-
  power the ConnectionManager interfaces for both modems which results
  in the 'Powered' property of both being set to 'true'.   Only one of
  the two will attach to the network however, and if both SIMs are
  unlocked, this is usually the second slot.

  Note, if the second SIM is locked, then the first SIM is used for
  mobile data.

  The cellular system settings uses the 'Powered' property to choose
  which SIM is selected, so the current behavior is clearly broken.

  It was suggested that we should change ofono to not self-power it's
  ConnectionManager interface, and instead add a wizard page that allows
  the user to choose which SIM to use for mobile data.

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