Thibaud A.
Horrible quality
the quality of calls is simply horrible. It's a waste of money and time.

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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Thibaud A.
the quality of calls is simply horrible. It's a waste of money and time.
James
I had lost my SIM card and ordered a replacement but did it not work. I had used this company before all over Europe two years ago with no glitches. After the second call to customer service the problem was sorted just a setting on my phone! I was trying it locally but unware to me no carrier had 2G service in my area any longer! The reps were more than helpful and very patient with me as I am no phone tekie for sure. Great customer service, good reception of SIM. I will be traveling back to Europe and now have a reliable phone Ya Hoo!!
Alan B.
I travel internationally a lot, primarily for business, but also for vacations. It's vitally important that I always know that I can be reached, or reach out if I need to. I have a standard phone that is fine most of the time. The operational word there is "most." I've been in some dicey situations where my phone -- for whatever reason, often because of a lack of an agreement between my home carrier and the local carrier -- didn't work. That's never happened to me with my backup phone which has a OneSimCard SIM chip. It's incredibly reasonable in price, and has been totally reliable for me over the years. The other thing that I want to pass along is that their customer service is also deserving of 5 stars (maybe 6 stars, really.) Whenever I've contacted them, no matter what time of day or night, where I'm calling from or what the problem, they've always been great. They take the time to understand my issue, and stay with me until they can resolve it. An example: on one trip, my backup phone with the OneSimCard chip got accidently run over by a car. End of phone. But I pulled out the SIM chip, bought an inexpensive 4-band GSM phone from a nearby shop, and was back in business. They even traded the new but uncharged battery for the slightly older but fully charged one in their demonstrator phone. We both came out ahead. So bottom line, I haven't found a better way to have reliable and cost-effective global communications than OneSimCard, and I recommend them to you for your consideration.
J B.
I am a nervous traveler to start. Keeping in touch with home when I travel is very important to me. OneSimCard and their customer service rep Chris was more than helpful, and very knowledgeable of this product. The help Chris provided for this novice traveler was outstanding. OneSimCard customer service for me is 5 stars plus.
Ron
My main contact in dealing with my problem was Yury L. I am specifically completing this survey to commend Yury for the wonderful job he did. I have never in any other circumstance had as commendable service from a computer-based tech support function as I had with Yury. I told him, and hopefully now telling his supervisors, that in my experience he epitomizes what tech support should be. He was consistently timely with recommendations, always courteous, and constant with follow up to see if actions had resolved problems. The computer world of problem solving would be a much better place if all tech support staff were like Yury. Thanks again, Yury!!
John
I have used this service for several years now when traveling the globe. I find it very effective, reasonably priced and great service when I have a problem. It is easy to recharge online and my unused balance remains until I use it again. Great product!
Charles D.
They eliminate your account balance unless you recharge periodically. When I tried most recently, they rejected every credit card and my verified Paypal account, making it impossible to recharge. Then they basically said too bad, use your balance before it expires tomorrow. As far as I am concerned, they have become low-level scam artists. I should add that I had their service for several years before they started playing these games, maybe new management now, but in any case BEWARE. Giving these people credit card data is certainly inadvisable.
Response from OneSimCardNov 22, 2017
Hello Charles, Thank you for your review! Our records indicate that OneSimCard Support attempted to assist you with airtime recharge issue over a three day period, despite threatening and otherwise foul language used by you in live chats and service email tickets. We take security of all credit card transactions extremely seriously. Our Customer Support agents did their best to explain to you the reason for the credit card declines as well as the fact that you do not have verified PayPal account. OneSimCard accepts only verified PayPal accounts in order to protect our customers from possible online fraud. You were also provided with other funding options available to you. OneSimCard's Expiration Policy has always remained unchanged for the entire 26 years that we have been in business. This policy is listed under the Terms of Use with a link provided to every new customer at the time of purchase to agree to. We will list it here in its entirety to refresh your memory as well as for the benefit of other readers: https://www.onesimcard.com/terms-of-use/ "Expiration The international SIM card phone number and account will expire if no outgoing usage is made for 2 years. The outgoing usage could be any of the following: Call made from the phone, SMS sent from the phone or any Data Usage. Personal Extra Numbers will stay active as long as they have been funded properly. The SIM card balance is valid for 10 months. The balance will continuously roll over to the next 10 month period provided that at least $25 is added within 10 months after the last recharge. If the balance expires, the service can still be used after a new recharge of the SIM card." Additionally, our Terms of Use (under REFUNDS) also state that any unused airtime is non-refundable: "We cannot give refunds for the airtime." Please let us know if you have any additional questions regarding any of the information listed in this reply. OneSimCard Support
Carol S.
Don’t bother with this item to talk on the phone...texting was ok
Response from OneSimCardNov 15, 2017
Hi Carol, Thank you for writing your review! Upon reviewing your account, we can see that your last number of attempts at making voice calls were unsuccessful since you did not have any funds in your prepaid balance. When you attempted to make these calls, you receive the following message: Insufficient funds in the account. $0.00 Prior to the funds being used up, our records indicate that you were able to make and receive voice calls without any issues. The rest of your funds went towards SMS and data packages that we can also see were used successfully. If you had any questions regarding the inability to make calls, even with the low balance notification, -- a free call to our Support would have immediately cleared this up. Our Support Center is also reachable via a free MS, Live Chat or email. Your complete set of calling, SMS and data records may be viewed in your online account under MySimCards>Call Details. Thank you, OneSimCard