Cast service worked all day to help me…
Cast service worked all day to help me out and resolve all of my issues. They made my day.
Marek Filipiuk
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OneSimCard
3.950 reviews
Last reviewed: Feb 14, 2026Do you agree with OneSimCard's TrustScore? Voice your opinion today and hear what 577 customers have already said.
www.onesimcard.comMember since Mar 2026
OneSimCard is an online company. Based on 50 reviews on TrustPlane, it has an average rating of 3.9 out of 5 stars. Last reviewed February 14, 2026.
Customer Reviews
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50 reviews
Used this service for more than ten…
Used this service for more than ten years and it works well
James Spears
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I paid for 1GB of data for 30 days in…
I paid for 1GB of data for 30 days in Russia. I was charged $20 for the physical sim card, $3.99 for postage, and $8.90 for the data. This card has no coverage in Russia. I was in St Petersburg for over 10 days and it never worked. I know it was installed properly because it worked in the US and in Turkey, but not Russia. I emailed and told them they had no coverage in Russia, but they didn't care. Fortunately, I didn't rely on this card. I had another one fail on the trip before. I bought a different phone with ESIM and used NOMAD and it worked perfectly. If you are going to Russia get a phone with ESIM. response-I don't know where you get your records, but all I can say is I was never able to access the internet with your sim card. You can make me sound like a liar, but I know I'm not. I'm trying to make other people aware of the issues with your card in Russia. I would never trust your company again.
Christopher Dobson
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For someone who is not technically…
For someone who is not technically skilled, Gino made the activation process seamless. He answered all my questions and guided me threw the process with ease.
Kellie Collier Driscoll
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I have been using Onesim since May 2024
I have been using Onesim since last year. I have used it in Europe and Turkiye and I had a great experience. Not only that the customer service is really good. Whenever I signed up to contact the support chat, I contacted knowledgeable and helpful people. Today, my agent was proactive and suggested a better option - even though I was looking for an answer for something else - for my next travel that saved me a lot of money. I highly recommend OneSim for those who are traveling and do not want to purchase a local sim card every time they visit a new country.
Sukran Balaban
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Terrible product as well as terrible customer service
First, every OTHER international physical SIM card I have ever bought immediately works automatically when installed-not this one even though my plan essentially covered the entire world. I installed it in Mexico & nothing. Contacted CS & all they did was provide chat replies that didn't work for two full days. Only when I got to Europe & reinstalled the card did it finally work. I bought a 2 gb/30 day data only plan (only needed the plan for 20 days total) AND I always set my phone to data saver. Basically I only use it for GPS in cities & for Whatsapp & Google. That's it. In the past that is MORE than enough data for 3 weeks. Yet somehow after about 15 days I get a vague message that "your data is almost used up" BUT unlike other SIM cards it didn't say how much is left. SO...I checked my phone data usage-it clearly showed that I used ONLY 1.30 gbs of data since the date of installation YET when I logged into my acct. it said I have used about 1.84 gbs. WTH??? I contacted CS WITH a screenshot of my phone's data usage but they claimed it was WRONG but refused to document how I used the amt. they claimed. They kept lying to me over and over again but would not provide any documentation. I had 3 days left in my trip so I didn't want to buy another $20 plan that I would never fully use BUT had $5 in credit where I could buy a SINGLE day of data for $4.50 for the nation I was in on my last day. But lo and behold when I went to do so it was magically down to $3.71 so I could NOT buy the one day plan! I kept getting the run around from their CS & they finally relented & gave me enough data to get to the airport. Additionally one of their CS agent had to gall to tell me that I could download Google Maps directions to use offline...no S Sherlock! But that is a pain in the keester & NOT why I bought a data plan-the arrogance & hubris was unreal. I don't buy a SIM card & a data plan to have all kinds of hassles while I am trying to actually enjoy my vacay...avoid this company & their lame product at all costs. Finally they don't have 24/7 chat CS-almost every time I had to leave a chat message & then it would take up to 12 hrs. to get an e-mail reply-unacceptable as well.
Richard
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Didn’t deliver item
Didn’t deliver item. Didn’t respond to follow up email.
customer
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Amazing services and a user friendly…
Amazing services and a user friendly experience with the platform
customer
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user interface outdated + bugs + Customer support doesn't respond
The user interface is completely outdated. I once lost $50 for credit that was never activated, and another $50 because money was deducted directly from my customer balance even when no credit pack was purchased. Customer support doesn't respond. I initially chose OneSimCard for the ability to receive SMS, but that doesn't work either — not with my bank, nor with Google verification services.I've now switched to AIRALO and I'm 100% satisfied. My girlfriend uses HOLAFLY — there are occasional bugs, but she always gets refunded and their customer service is responsive.
Robin Coppola
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Actually you did it ,
Actually you did it ,Loyalty LovelyCoolSafe and sound Trusted at all.You're Awesome ,Seriously I always love & proud you all , that's what I mean that ,Crystal Clear ,100% mean full not just only in words.Wishing you a wonderful time to be safe and sound overall One sim card people's.Thanks. ⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐Griffin Ganzeas 👍🏻
Ali Reza Moazean Tabrizi
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David gave very explicit information…
David gave very explicit information and included a link to instructions that helped me to achieve my objectives.
Bill
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Esim
Signing up for esim was simple,let's hope it works as well.
Paul Michael Palesh
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Don't take Onesimcard
Don't take Onesimcard, On Iphone, their app doesn't ring if your phone isn't unlocked and the app isn't open. So it's completely useless. What's more, no alert appears when I don't pick up calls. When I call Europe, instead of my U.S. number appearing on my correspondent's display, there's a French number! Response from technical support: it will take more than a day to solve this problem. I'm still waiting for my number to be displayed correctly after a week. Reply from the app: I've reinstalled our app.I have reinstalled their app 5 times on iPhone, without success.Refund request in progress.REPLY : I tested 5 numbers in Europe and all of them has the same issue with a french number instead my US number appearing. Didn't have the time to send you a request for refund now. Will do it tomorrow for sure.
Oliver
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Fast turn-around on eSim order
Fast turn-around on eSim order. Good instructions on set up. OneSim is working on a problem for a difference for the balance of the account on the phone app vs the web app.
ALL RIVER EQUIPMENT CORSON
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Being able to talk to a live person…
Being able to talk to a live person made it possible for me to load eSIM on my phone. The “live chat” was too slow to be helpful and some incorrect information was provided (IMO). I think the written instructions on the website need a thorough revision for clarity. I bet it would improve your bottom line by encouraging more people to sign up.
Susan
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Chat help was very informative and…
Chat help was very informative and knowledgeable. Made it easy to determine which one to get. Lots of affordable choices.
John
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ease of use and tech support answered…
ease of use and tech support answered my questions quickly
Frank
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Great options
This is arrest product. I've been using it for over 7yrs. Works everywhere and seamless to use
TOMAS JONES
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Fraud (Update: not a fraud)
UPDATE: I GOT A REFUND. To thank you, I changed my rate from 1 star to 2 star, and the review title from "Fraud" to "Fraud (Update: not a fraud)". I never got an email though. I hope you develop better support operations. My Original review follows...Never received the sim. Never got an answer back. This is what I was expecting, but I decided to try and check it myself.
Just a customer
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False advertising!!!
They are advertising products they don't have (which they admit to!) such as US based numbers, and two-factor services for banks etc.These are clearly listed on their website as services they offer!!!Extremely unprofessional company!
Christoffer Severin Holmsteen
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Cite this page
According to TrustPlane, OneSimCard has a 3.9/5 rating based on 50 verified reviews as of April 2026. Source: trustplane.app/company/www-onesimcard-com