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OneSimCard Reviews | Read Customer Reviews of onesimcard.com

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Electronics & Technology
Internet & Software
OneSimCard

OneSimCardReviews of onesimcard.com

4.0580 reviews
Internet & Software

OneSimCard4.0

Reviews580 About Contact

Overall score

4.0 out of 5

Great

Average of 580 reviews

Distribution

5★56%
4★23%
3★3%
2★3%
1★15%

What customers rate

Detail scores appear once 5 customers have rated them.

Contact & location

onesimcard.com

About OneSimCard

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.

Also known as: onesimcard.com
Website: onesimcard.com
Category: Internet & Software
Listed on Five Star Index: 2026

About these reviews

Replies: The company replied to 28% of reviews.
Latest: Most recent review: October 2026.
Edits: Reviews are shown as their authors wrote them. The company can reply, but cannot edit them.
Score: This company cannot pay to remove reviews or change its score.

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OneSimCard reviews

580 approved reviews, newest moderated first

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Mahomed K.
Dec 21, 2020
Thank you for the prompt delivery
Thank you for the prompt delivery
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Kevin S.
Dec 14, 2020
Kind of a LEGAL SCAM
I'm a digital nomad who was searching for a SIM Card in order to make calls and have data in different countries - at first sight, the OneSimCard seemed perfect. However, first of all: The "free" extra number is only free for 30 days. Okay, you could have read that when you click on all the links in the descriptions (but who does that?!). But that's okay. I get that - my fault. BUT then there's the issue: You cannot use the number you get for any confirmation messages (e.g. from your bank, Paypal, Amazon,... etc.) - after being in contact with the customer service FOR HOURS in order to figure out the issue, they finally sent me a link saying that this is an added feature of their service and that I'll have to order a new number for this purpose (which costs $60 per year)... only to be able to use this phone number for all purposes. AND THIS IS NOWHERE IN THE DESCRIPTION!! WHAT THE ?! I then asked for a refund and the customer service ("David") got really unfriendly, impolite and provocative - even though I tried to be as polite as possible about this issue. Absolutely unacceptable. All in all, this was a super unpleasant experience and I do never want to be in contact with such an unfriendly customer service EVER again. (I asked for a refund, but I'll only get part of my money back and do have to pay for the shipping. That sucks.) Order number: 1034702 RMA: 2755
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Mark C.
Nov 27, 2020
My simcard expired so I called them for…
My simcard expired so I called them for an extension. I explained that due to the pandemic I could not travel anywhere. They did not care and just took my balance (about $50.00) away. Now I will only buy a simcard in the country I'm in. No more prepay ripoff. Mark Choit
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Mubin A.
Oct 25, 2020
Fantastic service on time delivery…
Fantastic service on time delivery ahead of schedule.
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SM A.
Oct 23, 2020
scammer, fraud
scammer. don't fulfill the promise. when I asked for refund the money because they didn't fulfill the promise that's time close the live chat support by themself.
Response from OneSimCardOct 23, 2020
This is in regards to our OneSimCard VoIP feature application. As our representative tried to explain, our VoIP add on application has nothing to do with the need or use of a VPN connection. Whatever the connectivity issue that you are having on your device involving your VPN is an issue of your device and not our service. You even admitted it works when your VPN is enabled. We are not able to issue a refund for a used service because of reasons unrelated to our service. Our representative ended the chat as you became increasingly hostile in your demands, without listening to explanations. Please feel free to try our application on a different device using a standard internet connection. OneSimCard Support
Report
Robert V.
Oct 14, 2020
Great service
Very fast delivery, online video tutorials helpful. Phone working as it should. Thanks
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Naija B.
Oct 4, 2020
Great service from these guys
Great service from these guys
Report
Ann-Marie H.
Oct 1, 2020
Received my sim the next day
Received my sim the next day. I did need to contact tech support as my card did not recognize the network when i installed it in my phone. Very helpful technician had me sorted in no time.
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