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 undefined
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