ZIP SIM Review: Seamless connectivity throughout United States

ZIP SIM, previously Ready SIM, enables you to talk to your colleagues and friends when you reach United States from other countries. The ZIP SIM is basically oriented for travellers or those visiting US for the first time.

You just need to purchase the relevant SIM, insert it into your smartphone, and activate by texting the message to a specific number. You will be able to talk for seven days and if you are satisfied you can easily recharge the card with additional talk time.


ZIP SIM is a prepaid card and doesn’t require any sort of registration. You need not have to complete the forms, provide the identity etc.

Each unit of ZIP SIM comes with unlimited nationwide US calling with no limits on inbound or outbound calls. Moreover, you will be able to enjoy high-speed 4G LTE data without any kind of throttling and hotspot tethering. The company provides nationwide 4G LTE network with coverage across the US.

ZIP SIM enables you to make international long-distance calls to over 200 countries starting at 1¢/min. Text messages form part and parcel of mobile communication and with ZIP SIM you will be able to send unlimited messages to any country around the world without incurring additional charges.

As of writing this, ZIP SIM coverage is available across USA including Hawaii and Puerto Rico.


ZIP SIM package consists of two units. While the first package includes unlimited talk and text for seven days including 500MB 4G data, the second package offers 500MB of free 4G LTE data, which will be valid for 14 days. ZIP SIM also comes in 14, 21 and 30 day plans with 4G LTE data in 1GB and 2GB packages.

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The main attraction of ZIP SIM is that you will get all three types of SIM card (standard, micro and nano) in one single card. I have never seen integration of all the variety of SIM cards. This will definitely help customers with old mobile phones as well.


ZIP SIM will be very useful for people who prefer a backup phone which they can make use for communication while their original providers faces downtime.

Moreover, you will be able to maintain privacy since ZIP SIM doesn’t require you to provide any personal information to activate the service. You just need to insert the SIM and send a text message to a specific number to activate the SIM. You will be provided with a mobile number as well within seconds as a text message.


ZIP SIM will be useful for temporary workers who visit US on a business visit. For example, if you work in a large multinational company in India and asked to visit US for work related purpose for two weeks, you can buy ZIP SIM and talk to your family and friends without visiting any customer care centres. There is no need to fill any forms or submit photo identities.

Activation & Usage

To activate ZIP SIM, you just need to insert the SIM card from the relevant package and send a text message to 7850, while in US. We established connectivity very fast without any problems. In fact, we are amazed to see the performance of ZIP SIM since you will not find similar mobile connections anywhere in the world.

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You should make sure to take complete advantage of your trial period of 7 days by talking, sending text messages and finishing up your entire 500MB of data. If you activate the SIM and doesn’t perform any work, then you will be a loser since you will not be able to use the SIM card after seven days unless you topup by visiting the official website of ZIP SIM.

Recharging ZIP SIM

To recharge ZIP SIM after the expiry of your initial offer period of 7 days, you need to click the Top Up link located on the top navigation bar on the official website. You need to provide either your 10-digit ZIP SIM phone number or 19-digit SIM ID and complete the checkout process as displayed on the site.

You will be able to recharge only if you have an active plan or your plan should have expired within the last 72 hours. For example, if your plan expires on June 30, you will be able to topup the ZIP SIM within the next 72 hours.


ZIP SIM will be a valuable asset if you travel to United States for a short period of time. Moreover, you will be able to make use of ZIP SIM even if you enter US from other countries for initial few days till you make suitable alternative arrangements. You can just pick up the ZIP SIM unit from any retail shop, insert it and activate easily. Even if you are new to US, there will be no problem because you need not have to visit any place to submit any forms or documents.

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In short, ZIP SIM is an elegant way to keep in touch with your friends, family and colleague’s anywhere in the world from US without any hassles. We highly recommend ZIP SIM because of its simplicity and seamless connectivity.

Anand Narayanaswamy is the editor-in-chief of Netans. He was recognized as a Microsoft Most Valuable Professional (MVP) for 9 years (2002 to 2011) and currently part of MVP Reconnect program. He is also part of the prestigious ASPInsider program. Anand has published several articles and reviews related to various software and hardware products for various software and technology related websites. He is also active on social media and also participates as an Influencer for various brands. Anand can be reached at