How do I add more data to SIM card and mobile Wi-Fi?

Adding data to your SIM card and mobile Wi-Fi on GreatWallSIM is simple.

1. Open www.greatwallsim.com/store/top-up/.
2. Enter your SIM card number or Wi-Fi device number.
3. Choose a data plan for prepaid or unlimited.
4. Select the date you want the plan to activate. (China Time)
5. Click “Add Data Plan”.
6. You will be redirected to the checkout page.
7. Enter your billing information and select a payment method.
8. Click “Place Order”.