www.onesimcard.com

3.9
3.9 Based on 441 reviews

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....

Unclaimed Profile
Business profile not claimed
This business hasn’t yet claimed their profile on our platform and may be unaware it's listed. As a result, their rating might not fully reflect their customer service or responsiveness.

Average Rating

3.9

/
5

441 Reviews

5 Star
53%
4 Star
23%
3 Star
4%
2 Star
4%
1 Star
17%

All Reviews

Filter Reviews

Review Time

Kellie Collier Driscoll
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.

5
Date of experience: Sep 01, 2025
Christopher Dobson
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.

1
Date of experience: Aug 29, 2025
Sukran Balaban
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.

5
Date of experience: Aug 14, 2025
Richard
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.

1
Date of experience: May 29, 2025
customer
Didn’t deliver item

Didn’t deliver item. Didn’t respond to follow up email.

1
Date of experience: Apr 21, 2025
James Spears
Used this service for more than ten…

Used this service for more than ten years and it works well

4
Date of experience: Apr 17, 2025
customer
Amazing services and a user friendly…

Amazing services and a user friendly experience with the platform

5
Date of experience: Apr 15, 2025
Ali Reza Moazean Tabrizi
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 👍🏻

5
Date of experience: Mar 31, 2025
David gave very explicit information…

David gave very explicit information and included a link to instructions that helped me to achieve my objectives.

5
Date of experience: Mar 31, 2025
Paul Michael Palesh
Esim

Signing up for esim was simple,let's hope it works as well.

5
Date of experience: Mar 23, 2025

Is this your business?

Claim your business profile now and gain access to all features and respond to customer reviews.

Business Details

  • 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.

  • language https://www.onesimcard.com

We use cookies to personalize your experience. By continuing to visit this website you agree to our use of cookies

More