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Obsolete since Gecko 25 (Firefox 25 / Thunderbird 25 / SeaMonkey 2.22)
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.

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

Returns an SmsManager object you can use to receive and send SMS messages.

Note: Do not use anymore! This object has been removed in favor of window.navigator.mozMobileMessage.


var sms = window.navigator.mozSms;


This is a non standard implementation, but it is discussed at W3C as part of the System Application Working Group.

Specification Status Comment
Messaging API Editor's Draft Editor Draft (WIP).

Preferences & availability

  • WebSMS is disabled by default and can be enabled setting the preference dom.sms.enabled to true.
  • A comma-separated whitelist of allowed hostnames that are allowed to use the WebSMS API must be specified using the dom.sms.whitelist preference. This string is empty by default.
  • WebSMS is only available to certified apps on Firefox OS (B2G).

See also

Document Tags and Contributors

 Last updated by: fscholz,