Jugal
An excellent choice for international travel
I have been using Onesimcard since five years. I am always connected wherever I travel. It is much easier than renting and it saves a lot of time and money!

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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Jugal
I have been using Onesimcard since five years. I am always connected wherever I travel. It is much easier than renting and it saves a lot of time and money!
Jane N.
I have been using their services while travelling in Kenya, the simcard works perfectly with the local Orange network and is very affordable. Thank you very much
Jim
OneSim remains a great provider of quality service at a competitive price. I work international construction and am constantly on the move across the globe. I have used their services for over 10-years as my "back-up" to local Sim Cards. I'm a believer and stick with a good service provider at a competitive price.
JOHN
I've used onesimcard for several years. They have improved the annoying delay that occurs when you are having a conversation (last year it was almost unusable in certain situations). They offer an alias / alternate 'local' phone number to make it cheaper for others to call you while you are travelling. But the problem with this feature is that the number receives many spam calls - I am currently getting around 4 or 5 of these per day. This is extremely irritating. The overall cost of the service is reasonable which is why I use it. If they can solve the spam problem and further reduce the talk delay time, then I would give it a higher rating.
Dion
It works everywhere but the data is expensive.
Neville
With one sim card I am connected everywhere I go around the globe. No out of calls or not yet obtained a local number hassles
Malachy
I have been an user of One Sim card for over 10 years. Starting with a flip phone and now I have my old Apple 5 Iphone with an "one sim card" chip. I travel internationally about 8 weeks a year and can honestly say, it has working outstanding in the 20 plus countries that I have traveled. I must also comment on their excellent customer service team in Boston.
Bryan
Great Sim Card