Straight Talk Mobile Hotspot Number: 1-877-430-2355. The Straight Talk Customer Care Call Center Hours are: 8 AM – 11:45 PM (EST) 7 days a week. Average Wait Time: 15 minutes. TIP: When you are asked for a phone number, then press 1, 1, 5, 2, 5, 2 and then 0# to reach a real person.