Cynthia Ann N.
Easy Setup
I just got my Onesimcard today, it was easy to setup and add a PEN for Romania. Overall, I am happy with my purchase.

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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Cynthia Ann N.
I just got my Onesimcard today, it was easy to setup and add a PEN for Romania. Overall, I am happy with my purchase.
Niyi A.
It was amazing to me how Onesimcard works and I will surely recommend it to ever businessmen that travel around the countries. if you try Onesimcard, you will never and ever regret it. Good network reception and quality service.
Femi Felix O.
I have been using onesim card for a while now and I can only but give a double thumb up to them for their great service. I reside in Lagos,Nigeria and gets to travel to Benin republic,Togo,Ghana,Liberia and many other west African Countries where I hitherto had to pay very heavily for roaming in those Countries but now a thing of the past. Onesim card +372 numbers gives one's biz the truly desired international presence. If you desire to break away from high roaming rate and join the league of best call service then getting a onesim card is the way to go.
David
The customer service was helpful and being able to manage my online account online makes it easy to use.
Nery O.
I am a doctor and a seaman. Have to travel around the world. I had to buy different sim card for every country I went. Now I only have one and I can be in touch with friends and family no matter where I am.
Amr H.
I'm search and tried many options with regards to Worldwide SIMS. This is the one that is the easiest to use, has multiple options, and makes you feel great when using it overseas. Thanks OneSimCard.
cknorr91
I have been working in Brazil for one year and have had all kinds of trouble to get SIM cards and recharge them locally without a government issued ID. I wasted so much money. I love the Onesimcard. Whether Brazil or Japan. I don't have to worry about not being able to call the office when my company's agent or driver doesn't show at 11 o'clock at night to pick me up at the airport or there is some problem getting to the job site. I like that I can get a local number but that it lasts only as long as I need it to. I thik it is a good product. CM Knorr - Chief Engineer (Oil / Gas Industry)
Ray S.
I purchased my OneSimCard from a local retailer and it turned out that that particular sim card was faulty (which happens very rarely, I understand). The OneSimCard live chat was excellent and the local retailer replaced the faulty card without question. The new card was activated and my dollar amount on the first card was transferred to the new one within a couple of minutes. The best test of customer service is when there's a problem and in this case OneSimCard customer services clearly gets 5 stars.