Chris
So far so good.
I've received my simcard and made a test call. All good for now. Hope all goes smooth once I arrive in europe.

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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Chris
I've received my simcard and made a test call. All good for now. Hope all goes smooth once I arrive in europe.
Richard K.
The connection can be a bit hit and miss, but overall I am very satisfied with the product. The game-changer is the OneSim VoIP app which means that as long as you have an internet connection and a OneSim account you can send and receive calls at your preferred number anywhere at a very low cost! The app itself also can drop calls sometimes but overall, I am very impressed (when it works) with the call quality. For people who travel or need a certain country phone # I think this is an excellent choice.
fhfhrpfh
Have used in Europe, US, Asia, Australia. Works very well, Certainly much cheaper than roaming with Canadian plan. Convenient to have a NA number I can be reached on. Have recommended to friends and family and purchased extra sims for family members.
godb2nazu
Hi, this company is a scam, They like to charge calls which never got connected. I got ripped for $8 or so for 14 minutes of calls which they claim were made and never got through And to add insult to the injury they claim the calls were legit STAY AWAY from this SCAM CALLING company, if you want to save money
Rich
My wife couldn't bring her company iPhone5 to Europe, so I found a cheap unlocked iPhone5 on Groupon, and installed a Onesimcard for her. Everything seems to be working fine now for our vacation. I used this same card last year in my own iPhone for three weeks in Eastern Europe, and I will point out that Onesimcard's customer service is excellent and responsive.
Madison L.
I ordered a OneSimCard Plus card in order to prepare for my upcoming study abroad experience. The website's information was very helpful in narrowing down the right options for me, and it arrived right on time. The videos and user manual walked me through everything and made it very straightforward. I bought this product in place of using an international plan with my current provider because a salesperson at Verizon told me it would be more economical and after only a few days I can already tell it will be. I would recommend this product to others and I know I will use it many times. Thank you OneSimCard for the ease and the peace of mind!
Jean De N.
No, I had no reservations at all! I like this company, because everything is correct and there are no hassles. I tried de many features and possibilitys of my Onesimcard Plus, and everything works fine...I am shure my next trip to Costa Rica will be Ok....
Alex Y.
My husband is traveling outside of U.S for three months but still needs to connect with his U.S colleagues. It's really expensive if he used the regular AT&T. i looked up the sim cards company for him.The online chat is very helpful.