Bernardus de J.
Good Company
Good reliable 3G coverage throughout Europe. Transparent call and data logs and easy recharge.

OneSimCard.com provides inexpensive international mobile connectivity for travelers, businesses, and connected devices, helping customers stay connected wherever their journeys or operations take them. A service of Belmont Telecom, Inc., OneSimCard combines telecommunications experience with practical solutions designed to simplify global communications and help customers manage their connectivity costs. We've been helping our customers stay connected for over 30 years.Our services include international eSIMs and physical SIM cards, prepaid mobile data plans, voice and text options, and corporate mobile solutions. Travelers can choose connectivity that fits their destinations, devices, and usage needs, with convenient online account management and recharging. Our OneSim VoIP app provides additional calling and messaging options over an internet connection.For businesses, OneSimCard also offers IoT and M2M connectivity for applications such as asset tracking, fleet management, connected equipment, and remote monitoring. Flexible connectivity options and SIM management tools help organizations support deployments ranging from a handful of devices to larger international operations.Supporting our customers is central to everything we do. We understand that selecting a service is only the beginning: customers also need clear guidance, straightforward setup instructions, and knowledgeable assistance when questions arise. Our team helps customers navigate product choices, activation, account management, and technical troubleshooting, supported by online resources and direct customer support.Whether you are planning an overseas vacation, keeping employees connected abroad, or managing devices across borders, our goal is the same: to make international connectivity easier to understand, simpler to manage, and backed by people committed to helping you succeed.
OneSimCard (onesimcard.com) has 580 customer reviews on Five Star Index, with an average rating of 4.0 out of 5.
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Bernardus de J.
Good reliable 3G coverage throughout Europe. Transparent call and data logs and easy recharge.
Adam M.
excellent company, very good prices for sim cards and international rates. also too a lot of options to choose from. my card came earlier than expected and worked with no problem easy setup
Barry
Just getting started with OneSimCard, but the experience so far has been excellent. Ordering and delivery went smoothly and setup for test call was easy. The rates seem fair and I like the idea that the card remains active during extended periods of inactivity. Looking forward to using it in multiple countries soon.
William B.
Excellent service, timely responses and good website. I needed the ability to call from different countries and to receive calls from the US when out of the country and OneSim is the best solution I could find. Prices very reasonable, and setup was a breeze.
Henry D.
Travelling without an immediate means to connect with family and friends was a nightmare. With onesimcard, life has become seamless and I am enjoying every moment with onesimcard. Keep up the good job!
Daniel P.
I have been very happy with the service I have received from Onesimcard. I first purchased a phone from them almost a year ago and used it without any problems while I visited relatives in Europe. I am now planning to return to Europe for another visit. Since I hadn't used the phone since my last trip, I used Onesimcard's online chat support service to help me get the phone set up again. I had a very helpful and pleasant session with Stephanie, one of their representatives and now I am ready to start using the phone again.
Paul
I am an occasional overseas traveler. A couple of years ago, I was researching the best phone service without being put on an international plan with my cell carrier. I did some research and found Onesimcard. I am travelling again and all I had to do is recharge the sim card. With a little help from online chatting, I was back in business. I will defientley be using Onesimcard in my travels.
Rafi U.
During travel two major problems I used to face. First, of course, the roaming cost being very expensive and second one limits on maximum usage during roaming being imposed by my service provider on the pretext of my own safety. After searching I found OneSImCard is a perfect solution under one umbrella. The order came very quick, managing account on the web is user friendly, the quality of voice is perfect and overall I am satisfied with OneSimCard services.