About Us Mr. Fix and Customize was established in 2016, beginning as a small storefront. Since then, we have grown in size and moved on to partner with the Cellairis franchise where we manage two of their stores. One is located in Walmart in North Smithfield and one in Walmart in Coventry, with our central location in Johnston, Rhode Island. We specialize in OEM parts in order to repair all of your electronic devices. We now have three certified technicians whose main priority is fixing all your electronics as quickly and efficiently as possible.