In HTML select tag you can not use images in case if you try like this.
<select>
<option value="phone" style="background image:url(images/mobile.png);">Mobile</option>
<option value="email"><i class="fa fa-email"></i> Email</option>
<option value="visit"><i class="fa fa-home"></i> Home</option>
</select>
To use icons in drop down options you can use Font Awesome Icons. In free font awesome version, you can find many useful icons.FontAwesome icons here .
In a free version, you can only use icons available in this font. you can not add custom icons. So for adding custom icons, I have found a way to do so. There is a Website Icomoon .
You can create upload your icons in SVG format and the IcoMoon app will convert all those icons in Icomoon font just download the font and add it to your project. Then you can use Icons by their #UniCode Unicod
By using Icomoon app you can create backup your project on IcoMoon App and can use anytime you want. you can use icons with Unicode like this
<select style="font-family: 'icomoon'">
<option [innerHTML]=" Mobile' ' + "\e900";"></option>
<option [innerHTML]="Email + ' ' + "\e900";"></option>
<option [innerHTML]="Postal + ' ' + "\e900";"></option>
<option [innerHTML]="visit + ' ' + "\e900";"></option>
</select>
Don’t forget to use style=”font-family: ‘icomoon'” is select tag. Always use unicode as [innerHTML] attribute.
