Is there ANY way to get a Smart Phone number from website?

Question

I'm searching for a way to get the phone number of a device using HTML 5, Javascript or something like it. Recently, I wanted to get the coordinates of the device. I could easily do that by writing some JS like:

<!DOCTYPE html>
<html>
<body>
<p id="demo">Click the button to get your coordinates:</p>
<button onclick="getLocation()">Try It</button>
<script>
var x=document.getElementById("demo");
function getLocation()
  {
  if (navigator.geolocation)
    {
    navigator.geolocation.getCurrentPosition(showPosition);
    }
  else{x.innerHTML="Geolocation is not supported by this browser.";}
  }
function showPosition(position)
  {
  x.innerHTML="Latitude: " + position.coords.latitude + 
  "<br>Longitude: " + position.coords.longitude;    
  }
</script>
</body>
</html>

Now I'm almost done with my part of the job, but the last thing I need to do is to get the phone number of the smartphone that access that website.

Is there ANY way to do this? :/ please... and thank you.

Almost definitely not. Anyway, if you do, you'll probably be violating some privacy laws for taking information like a phone number without user permission or knowledge. — Linuxios, Jan 21 '14 at 22:40
`Is there ANY way to do this?` Yes; prompt the user to input their number. — admdrew, Jan 21 '14 at 22:41
from a JS perspective, data and voice flow though different pipes that's aren't connected or even aware of eachother. — dandavis, Jan 21 '14 at 22:49
Does this answer your question? [How can I get the device's phone number through JavaScript in Android?](https://stackoverflow.com/questions/4003339/how-can-i-get-the-devices-phone-number-through-javascript-in-android) — Didier L, Mar 09 '20 at 09:35

score 6 · Accepted Answer · edited May 23 '17 at 12:26

6

There is no reliable way to get a phone number with JavaScript without prompting the user. That is, it cannot be retrieved automatically using a browser API.

It is possible inside of certain Android / iPhone application views. See discussions here: How can I get the device's phone number through JavaScript in Android?. And here: Getting the local iPhone number through SDK

As mentioned in comments, this is not a good thing to do in general (privacy, etc.). Definitely prompt the user for input if the phone number is needed.

edited May 23 '17 at 12:26

Community

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answered Jan 21 '14 at 22:57

bogeylicious

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"That is, it cannot be retrieved automatically using a browser API." There's any official documentation that states that behavior? – Paulo R. F. Amorim Oct 08 '20 at 13:30
1

@PauloR.F.Amorim there is no documentation stating all the things that are not possible. Lack of documentation for a thing strongly hints at that not being possible / supported. My browser also cannot automatically brew me a coffee but where is the documentation saying that browser cannot brew coffee or make me sandwich? – luk2302 Oct 25 '22 at 06:28

Is there ANY way to get a Smart Phone number from website?

1 Answers1