On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 28 on 2013-07-09
In Chrome Android version 28 on 2013-07-10
In Edge version 15 on 2017-04-05
In Firefox version 36 on 2015-02-24 Note: Although the onsignalingstatechange property is supported, the signalingstatechange event is not fired as an Event object. See bug 1075133.
In Firefox for Android version 36 on 2015-02-27 Note: Although the onsignalingstatechange property is supported, the signalingstatechange event is not fired as an Event object. See bug 1075133.
Not in Internet Explorer
In Quest Browser version 5.0 on 2018-07-01
In Opera version 15 on 2013-07-02
In Opera Android version 15 on 2013-07-08
In Safari version 11 on 2017-09-19
In Safari on iOS version 11 on 2017-09-19
In Samsung Internet version 1.5 on 2013-09-25
In WebView Android version 4.4 on 2013-12-09
In WebView on iOS version 11 on 2017-09-19