Roberto
Excelente service
Good converge and service

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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Roberto
Good converge and service
Thomas
Purchased a basic OneSim phone for international travel (England, France, Switzerland, South Africa). It has worked flawlessly and allowed me to make local calls as well as calls home (US). Automatic recharge is very helpful.
Jonne L.
It works very well in the americas, haven´t tested in Europe. Good support a good website where you can follow your costs per call or sms. I recommend this service strongly
Rick
I have used OneSim Plus service for about 2 years and it is a great service. I am retired and travel frequently to Europe, Asia, and many cruises and I rely on this phone service so that my family can contact me in the event of an emergency. I have used other international SIM cards but OneSim Plus always makes the connection with local phone services at reasonable prices for calls, text messages and data. Wouldn't travel without OneSim Plus.
Toshimi
While I was using in Sweden, Holland、I experienced very comfortable phone and data using. But in US, I often was unable to use phone, it seemed difficult to find a career. And in Vietnam I couldn't use phone, then I had to use VoIP and it cost very high.
Jason
I've used OneSimCard for probably over 3 years now. I've been able to connect in Japan, China, Taiwan, Mexico, Argentina, and the the US. Sometimes it takes a bit of time to find a carrier but I've always been able to call and send texts. I don't use data so I can't speak about that, but now that I have a dual sim card phone I always have my onesimcard with autoreload so whenever I travel I don't have to bother about phones because it's all ready for me, so no complaints from me.
Madalitso
My recent trips have included Kenya,UK,Luxembourg,France and Germany.In Each of these Countries, the One Sim proved its usefulness. Being able to call the loved ones when arriving in each place and getting called is exactly what I needed most.The product is a must for any serious traveller (Globe trotter).You wont regret the investiment!
Marojahan
When I have landing in one of other country, one sim card directly conect to local profider without timeless. Excellent service :)