Cordova trying to dial telephone number

You didn't specify which version of Cordova you are using so I'm going to assume version > 3.

Make sure that InAppBrowser, a plugin since version 3, is installed and then open the link by calling it through Javascript like this:

window.open('tel:12345678', '_system')

_system will open it with the systems own browser which in turn will open the call dialog, if you use it against http://maps.apple.com/ it will open in the maps app and similar for other apps which opens for special urls.

Remarks:

• As described in the docs of the InAppBrowser plugin the window.open function won't be set automatically. You have to do it your self: window.open = cordova.InAppBrowser.open;. Instead you can directly use cordova.InAppBrowser.open('tel:12345678', '_system');
• Make sure your number doesn't have any blankspaces in it (the +prefix is okay). For example you could use a function like the following,assuming num is a string.

Function:

function placeCall(num) {    if (window.cordova) {        cordova.InAppBrowser.open('tel:' + num.replace(/\s/g,''), '_system');    }}

Below Code works perfectly fine for iphone:-

window.open('tel:123456', '_system');

Simulator doesn't support dialer. No need to waste time.

Make sure that the phone number in your href also doesn't have any formatting in it, as on iOS it causes the link not to work in a PhoneGap App. So for example, use tel:0390005555, and not tel:(03) 9000 5555.