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.

Supported in Firefox OS 2.1.

See also

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