Contact Sprint customer service by phone or by using the chat option on its website. The phone number to call for questions or concerns is 888-211-4727, and the online chat is available at Sprint.com.
Sprint's customer service is available by phone at any time of the day, and its online chat is available from 6 a.m. to 11:30 p.m. Monday through Friday and from 7 a.m. to 11 p.m. Saturday and Sunday. The chat line gives you options regarding your question or concern and connects you to an associate that can help you resolve your billing issue. Online chat and electronic bill paying require a computer.