To change from auto top-up to manual top-up, you can apply the following steps:
• Log-in to your account at http://www.zonetel.com.sg
• Click Top-up Information.
• Under Top-Up Option, select Manual Top-Up via SMS
• Key in SMS Alert Mobile Number
• Click Submit button to register changes.
Alternatively, you may call our Customer Care Hotline: 6259 9453 for assistance.