favicon differs from pc to mobile

[links2see]

I have added my own favicon to my website, which comes up fine when using a computer, but still shows the Abantecart icon when I save my website on my smart phone. Is there a way I can have my own favicon show up on mobile?

[abantecart]

You can check this file: https://github.com/abantecart/abantecart-src/blob/master/public_html/storefront/view/default_html5/template/common/head.tpl

Look at lines 22 to 25
These are the icons that are used for mobile and tables. 
You can upload your own icons with the same file names to /image/ directory.