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 writte... See more
Company replied
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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 writte... See more
Company replied
I am giving 5 stars simply because the customer service agents stuck by me for two long trouble shooting sessions when in the end, I discovered that it was MY problem because I had "Do not disturb" cl... See more
Bad – unacceptable experience, unreasonable and rude conduct. I paid in Fry's $19.99 + tax. For foreign phone numbers + one month registration (with zero balance) they charge additional $39.99. ??... See more
Company replied
One sim customer service is very good, no need to wait, just dial from your mobile to customer care, and within one minute you will receive a callback. All problems were listened to very carefully and... See more
Company replied
The best international SIM card for world travel. Talk, Text and Data. Save 85% on global roaming in 200+ countries. 100% prepaid, pay as you go service.
Replied to 85% of negative reviews
Typically replies within 24 hours
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.
Date of experience: May 29, 2025
Didn’t deliver item. Didn’t respond to follow up email.
Date of experience: April 21, 2025
Reply from OneSimCard
Amazing services and a user friendly experience with the platform
Date of experience: April 15, 2025
Reply from OneSimCard
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.
Date of experience: March 07, 2025
Reply from OneSimCard
Actually you did it ,
Loyalty
Lovely
Cool
Safe 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 👍🏻
Date of experience: March 31, 2025
Reply from OneSimCard
David gave very explicit information and included a link to instructions that helped me to achieve my objectives.
Date of experience: March 31, 2025
Reply from OneSimCard
Reply from 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.
Date of experience: March 13, 2025
Reply from OneSimCard
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.
Date of experience: March 18, 2025
Reply from OneSimCard
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.
Date of experience: March 11, 2025
Reply from OneSimCard
Chat help was very informative and knowledgeable. Made it easy to determine which one to get. Lots of affordable choices.
Date of experience: February 26, 2025
Reply from OneSimCard
ease of use and tech support answered my questions quickly
Date of experience: February 24, 2025
Reply from OneSimCard
This is arrest product. I've been using it for over 7yrs. Works everywhere and seamless to use
Date of experience: February 18, 2025
Reply from OneSimCard
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.
Date of experience: December 05, 2024
Reply from OneSimCard
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!
Date of experience: January 21, 2025
Reply from OneSimCard
Their business model is based on fraud. I bought their e Sim and have around $125 in my account with them. When it was time to use the service, it simply did not work. I contacted their customer service and was presented with some "solutions" but nothing worked. I had to buy another Sim from another service provider. I am asking for my money back but One Sim was first stalling me and now their CS is not responding. Clearly they are thieves and robbers. STAY AWAY FROM ONE SIM CARD.
Update: I am responding to One Sim's reply to my review.
I followed each and every step suggested by your technical support not just once, but several times. You should have access to the exchange of messages, or should I post the conversation here so that potential customers can judge how you are trying to mislead. Shame on you.
Date of experience: January 09, 2025
Reply from OneSimCard
Well organized and informative web site. Follow up to confirm I really intended to order more than one sim card. Which I did.
Date of experience: January 12, 2025
Reply from OneSimCard
Very happy with these e-sims especially the DataMax eSim!
Date of experience: January 04, 2025
Reply from OneSimCard
Again here in Costa Rica, great connection with my normal numbers set as + 1 yyy xxxx.
It's a callback system that works fine. Ken
Date of experience: December 26, 2024
Reply from OneSimCard
Very easy to use service if you travel abroad and don’t want to look for a free wifi or pay huge roaming fees for data. I’m a fan 👍
Date of experience: December 22, 2024
Reply from OneSimCard
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