How To Top Up ZIP SIM Online
IMPORTANT NOTE: If you top up a ZIP SIM with an active plan on it, the top up plan will overwrite the existing plan, and you will lose all remaining days and data left on that plan. The best time to top up is after your current plan has expired.
You will be able to top up ZIP SIM online at www.zipsim.us/topup
Please have your 19 digit SIM card number or your 10 digit ZIP SIM number
Keep in mind that you will need to top up your ZIP SIM within 72 hours after your current plan expires to be able to top up the account.
Select the Plan you need and click "Buy Now"
Proceed to checkout and enter your billing and credit information and your plan will be extended!