* Please refer to [https://wiki.mozilla.org/WebAPI/WebTelephony/Multi-SIM#Proposal_for_Multi-SIMs WebTelephony/Multi-SIM RIL implementation ].
== Status ==
* [https://bugzilla.mozilla.org/show_bug.cgi?id=814629 bug 814629] for WebMobileConnection API. (Ongoing)
* [https://bugzilla.mozilla.org/show_bug.cgi?id=818353 bug 818353] for adding subscriptId in backend implementation. (Ongoing)