One of the most cost-effective ways you can set up a phone number dedicated to your art business is by attaching a Google Voice number to your mobile phone. If you have a smartphone you can even download an app to answer your Google Voice calls directly from it. Go to Google Voice to learn all about the options, and, yes, you can use it with an Android or iOS device as well as your computer. It is free for personal use in the USA. Both personal and business plans are offered.