One Portal / Make Money / Easy to Use

Higher Traffic, Higher Sales, Higher Profits for Your Business!

Who is STi?

STi is International Long Distance and Top Up Service Without Equal

A Little About Our History

We are STi, the company that helps our consumers stay connected and progressing together. Over the last 21 years the STi name and logo have developed as one of the most well-known and trusted brand for connecting families and providing top-quality international long distance service at great rates. The STi phone cards are known for their worldwide range, their high quality, excellent customer service, and more than anything else, their great value. STi products are designed with one thing in mind: connecting people with their loved ones. We cover every corner of the world, including Mexico, the rest of Latin America, the Middle East, Africa, Europe and the Pacific Rim. STi offers great prepaid calling cards, pinless connections, as well as domestic and international top-up services.

Fun Facts

Since January 2015!

Minutes Used


Cards Sold

Top Ups

Why Choose STi?

6 Reasons Why We Are The Best


Better commissions on International Long Distance sales & Top Ups than the competition and if that was not enough, residual commissions on your customers' purchases outside your store, including online!


More minutes for your customers than the competition with clear and uninterrupted connections anywhere across the world anytime, everyday.


A brand, STi, that is well known and used by millions of phone card customers everyday.


Prepaid only, so no invoices to track and you can withdraw funds at any time so there is no risk!


We are always near you to support and promote your business via our customer service line, our portal support, or through our network of agents across the country to serve you.


Helping you participate in the lives of your customers by connecting them with their friends and families back home.

Our Services

We Are Experts In Developing Your Business

Mobile Top Ups

Now you can add funds to the prepaid mobile phones of your customers' friends and families here in the USA, or wherever they are in the world. Safe, simple and done!

International Long Distance

The clear lines that deliver smooth, uninterrupted conversations, and if you add to that, low rates and excellent customer service, it simply means you can't provide your customers with a better connection to those they care about the most.


Makes it faster and easier than ever to connect your customers with the people they love. No PIN's, just more time to talk!

"Our partner stores are trusted places where customers come for a connection to their home country. And STi is a trusted brand that has been providing customers with quality international calls for over a decade. Our new STi Prepaid portal is the perfect way for our stores to provide a trustworthy pinless and top up solution to their valuable customers."

(Thomas Lynch, CEO)


We Make Our Customers Happy

"Easy to Navigate and Use"

My experience on STiprepaid.com was great! I really liked the fact that I can add time to my customer’s phone and his father who lives in Mexico. STiprepaid.com was so easy to navigate and use. The instructions were very clear, and the terms and conditions were short and to the point. I'm glad I was able to save my information for future use. I felt it was secure to use my debit card because of the security features and the commissions are better than other services. I will definitely keep using this service in the future to add funds to my customers’ cell phones."

Augusto Escula
Marketing Lead

"Great Service and Commission"

I like the way this service simplifies the purchase of airtime to cell phones in Mexico, the page is well designed, I mean, It didn't take me more than 3 minutes to sign-up to be a seller. There is nothing to dislike. I would definitely use it in the future; most of my customers are Mexican and have their services with Iusacell. And StiPrepaid.com offers a great service and commission structure. Thank you!

Aurelio Avelleyra
Web Designer

"Simple Solution"

STiprepaid.com seems like a simple solution to add minutes to customer’s cell phones. It's easy, convenient and the site is pretty easy to navigate. The thing I like the most about STiprepaid.com is that it is quick and easy to add money to a cell phone. My employees can process many transactions in minutes. And the high commissions are not too shabby. Thank you!

Lisa Betchtel

"These Are Very Exciting Times"

We invested a lot of time in designing a product for our retailers that would be so simple and fast to use, that basically would not need any training to start using. But still provide a modern and fully functional portal. Allowing our customers to focus on what they like to do which is sell to their customers. These are very exiting times, where we see the STi brand come stronger than ever.

Luis Mata
Chief Techncology Officer

"Quality You Can Rely On"

The STi brand equals quality that you can rely on - we are committed to continue bringing products and services with the best possible quality and with our consumers always in mind…

David Gil
New Product Director

"Start of A New Revolution"

The new STi portal is so simple to use and with its very competitive international long distance minutes offered to Countries around the world, it will be start of a new revolution!

Marc Kerns
Chief Financial Officer

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