This API is available on Firefox OS for internal applications only.

The result read-only property of the MMICall interface returns a promise that resolves to a MozMMIResult object containing information associated with the success status of the MMI call.


MMICall.result.then(function(MMIResult) { // do something with MMI result });


A promise that resolves with a MozMMIResult object.


// Telephony object
var tel = navigator.mozTelephony;

// Place a call
tel.dial("*123#").then(function(call) {
  call.result.then(function(MMIResult) {
    // do something with MMI result


Specification Status Comment
Web Telephony Draft Draft

Browser compatibility

For obvious reasons, support is primarily expected on mobile browsers.

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support No support No support No support No support No support
Feature Android Firefox Mobile (Gecko) Firefox OS (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support No support ? 2.1 No support No support No support

See also


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