Switch to Sprint Customer Service Phone Numbers Customer Service: 888-211-4727 Order: 1-866-275-1411 Make a Sprint FonCard: Call 800-366-2255 Refresh a Sprint Prepaid Card: Call 800-366-0707 Wireline Services: Call 877-877-8748 Account questions: 800-927-2199 Converged wireline and wireless: Call 866-653-1056 Internet connectivity: 866-653-1056 VOIP and managed services: 866-653-1056 Nuevos clients de Negocio: En español: 800-230-9709 Switch to Sprint