You can return the WiFi in person to our Hanoi or HCMC office or if you are too busy, Weefee can collect your device 1 day after you have returned to Vietnam. For example, if you are back to Vietnam on Monday, our staff will contact you on Tuesday and let you choose how to return the device. You can either return it directly at our office or let our delivery courier pick it up for you at your house or office.