Installable web app does not use icons while being installed on android

Question

I am deploying an installable web app with web manifest and icon images are not being used when installed on Android (I have not tried other platforms).

I am following this guide: https://developers.google.com/web/updates/2014/11/Support-for-installable-web-apps-with-webapp-manifest-in-chrome-38-for-Android?hl=en

My system parameters:

• index.html is available
• manifest.json is avaliable and is used when "add to homescreen" is being called
• App is properly installed (except for icons) - it points to the right URL and uses a standalone mode
• Images are available - one of them is used as browser icon and is visible in both desktop and mobile chrome browsers
• Mobile chrome version 51.0.2704.81
• Android version 6.0.1
• Azure web app is used to host the web app

Manifest.json

{
 "name": "Test app",
 "icons": [
  {
    "src": "icon-1x.png",
    "sizes": "48x48",
    "type": "image/png",
  }, ...

Answer 1

I needed to configure an icon with resolution 256, probably due to the screen size of Nexus 6.