Mobile redirect/forward to tel://

Question

I am trying to understand why the below works on desktop but not via android mobile:

<script>
window.location.replace("tel://023222244546");
</script>

I have tried many redirects but none are working on mobile device. I know with href on click it would work but I am trying to achieve this onload

Answer 1

Remove the "//"

<script>
window.location.replace("tel://023222244546");
</script>

see https://tools.ietf.org/html/rfc3966#section-8