What is the phone number for simple mobile? Phone Number of Simple Mobile is +1-877-878-7908 . The Simple Mobile is a Limited Liability Company based in the Irvine province of the US state California. It is a virtual network operator providing various mobile plans including data plans and voice plans for personal and business customers.What is the simple mobile customer service telephone number? Simple Mobile Customer Service Phone Number: 1-877-878-7908. Phone Line Hours: 8 AM to 11:45 PM (Eastern) 7days. When calling the Customer Support number, you will hear the following automated respons.What is the number for simple mobile? A customer can contact Simple Mobile at this number, 1-877-878-7908.