What kinds of formality are required to fulfill for a business in New York City? Though, I have to start a business of cell phones and don’t know about the process that how to sell cell phones in New York City? Here, I am already selling the cell phones accessories in the city, but want to expand my business. Please help me to do so. I need to know about the documents that are required to be submitted. Have you registered for any business in the city? If you have done so, please make me know about it. Thanks in advance.