I'm updating my review after my experience yesterday. I noticed that my data was almost used up, so I went to purchase a new data plan. Unfortunately, OneSIM doesn't allow you to buy a ne... Toon meer
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Great help and support but the website is flaky and often unavailable, and I do not know why. I cannot log into my account yet again, Cloudflare reports a host timeout or in one case when I did get... Toon meer
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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... Toon meer
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... Toon meer
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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.
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A sneaky little way of cheating customers of a few bucks here &there
I'm updating my review after my experience yesterday. I noticed that my data was almost used up, so I went to purchase a new data plan.
Unfortunately, OneSIM doesn't allow you to buy a new data plan until the old one's used up. So I deliberately used up my data, checking how much I had remaining every few minutes. When I received an SMS that my plan had been used up, I immediately put my phone in flight mode. I then purchased a new data plan. But right before doing that, I noticed my balance was $4 lower than it was earlier that day.
So I went on OneSIM's chat support and explained what had just happened. The guy agreed this lower balance was due to the lapse in between when my data plan was used up and when I received an SMS about it. And he did not give a flying flip. He said it was _my_ responsibility. I'm not sure how something that wasn't humanly possible was somehow my responsibility. It's particularly deceptive considering that OneSIM is always encouraging customers to buy a plan in order to avoid exorbitant charges for data.
The first piece of spaghetti he threw at the wall was to suggest that I sign up for automatically renewing data plans. Well, that's exactly what I used to do, and OneSIM makes it clear that the same thing can happen with automatically renewing data plans.
Next, he took this as an opportunity to upsell me to the DataMax SIM card. At my expense, of course. After his prior suggestion, I had no reason to trust a word he said.
Unfortunately, I don't know of any other SIM card service providers for international travel that are a better option.
Great help and support but the website…
Great help and support but the website is flaky and often unavailable, and I do not know why. I cannot log into my account yet again, Cloudflare reports a host timeout or in one case when I did get the account login page and SSL handshake failure.
These should not be problems, and they need to fix their web hosting

Antwoord van OneSimCard
Great!
Needed help in setting up my account for SIM and extra-number payments. Gino R was great! Helped me thru multiples steps in the process. Appreciate your "live person" help.

Antwoord van OneSimCard

Antwoord van OneSimCard
Great technical support
A problem occurred and the technical support people found an obscure setting in my iPhone that needed to be changed. That fixed what was a vexing problem that was not the fault of 1Sim VOIP.

Antwoord van OneSimCard
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.

Antwoord van OneSimCard
Used this service for more than ten…
Used this service for more than ten years and it works well

Antwoord van OneSimCard
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.

Antwoord van OneSimCard
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.

Antwoord van OneSimCard
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.

Antwoord van OneSimCard
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.

Antwoord van OneSimCard
Amazing services and a user friendly…
Amazing services and a user friendly experience with the platform

Antwoord van OneSimCard
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.

Antwoord van OneSimCard
Actually you did it ,
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 👍🏻

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

Antwoord van OneSimCard
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.

Antwoord van OneSimCard
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.

Antwoord van OneSimCard
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.

Antwoord van OneSimCard
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