Yes! Google has already stated how important it is for websites to be mobile friendly (in terms of SEO – your rating in search engines).
This is a very important factor, as well as improving the user experience on mobile devices.
This is a must for all websites – if you have a website that isn’t mobile friendly (you can check if your website is considered “mobile friendly” by google here (https://www.google.com/webmasters/tools/mobile-friendly/) ) and would like some help please contact me and I’ll see what I can do for you (this service is only available for WordPress websites as this is where I specialise. Please note that to make your website mobile friendly, this may require a layout change – sometimes this isn’t necessary, it will depend what sort of theme you are using as well as a few other factors).