Just billed me £29 for sim I never used. 24.1.24 FURTHER UPDATE. received another email saying they would cancel, only to then receive ANOTHER email demanding £29. Who are this unprofessional bunc... See more
While we don't verify specific claims because reviewers' opinions are their own, we may label reviews as "Verified" when we can confirm a business interaction took place. Read more
To protect platform integrity, every review on our platform—verified or not—is screened by our 24/7 automated software. This technology is designed to identify and remove content that breaches our guidelines, including reviews that are not based on a genuine experience. We recognise we may not catch everything, and you can flag anything you think we may have missed. Read more
See what reviewers are saying
I encourage everyone to stay away from this crowd. They took 230 pounds out of my account without permission and are refusing to refund me.
This is a great company offering a great value SIM. Much cheaper than going to Vodafone directly. Also just want to say how fantastic Marianne is. A very helpful person who answered all my question... See more
I recently switched from EE to O2 via OneCall. The customer service provided to me by Marie-Anne and Mark was stellar. There was one minor hiccup during the initial stages with setting up WiFi calli... See more
Company details
Contact info
34 South Molton Street, W1K 5RG, London , United Kingdom
- + 44 0330 094 6904
- info@onecallsim.com
- onecallsim.com
People also looked at
AVOID
Just billed me £29 for sim I never used.
24.1.24 FURTHER UPDATE. received another email saying they would cancel, only to then receive ANOTHER email demanding £29. Who are this unprofessional bunch!
January 23, 2024
Unprompted review
STAY AWAY
I encourage everyone to stay away from this crowd. They took 230 pounds out of my account without permission and are refusing to refund me.
January 11, 2024
Unprompted review
Scammers
Bully you into paying when it's not a contract run away from this network as fast as u can changing networks immediately scammers
July 7, 2023
Unprompted review
Best mobile company I've been with
Best mobile company I've been with . Service all over has been professional and I'd never consider going elsewhere
May 24, 2023
Unprompted review
Reply from Onecallsim
Thank you for the great review. We are happy to hear you are enjoying our service.
Fantastic company
This is a great company offering a great value SIM. Much cheaper than going to Vodafone directly.
Also just want to say how fantastic Marianne is. A very helpful person who answered all my questions.
I highly recommend this company for your SIM needs.
May 8, 2023
Unprompted review
It was really easy to apply for
It was really easy to apply for . I received my o2 sim in two days.
March 18, 2022
Reply from Onecallsim
Thank you for your positive review and Welcome to the OneCall family
Just think service is quite slow
February 9, 2022
Reply from Onecallsim
Good morning, I am sorry you feel our service is slow. You purchased your SIM cards from us at 00:21 on 08/02/2022 we asked you to complete a security clearance via email at 11:33 on the 08/02/2022 which you completed at 18:05 on the 08/02/2022 at which time your SIM cards were set for dispatch on our next post run which will be today 09/02/2022. The entire processing period took less than 1 working day, There is no possible for us to safely run our business any quicker.
Excellent service and products
Very good service and products. Technical support is first class.
September 29, 2021
Great Service So Far!
Easy to contact via Online Chat with prompt response and product knowledge. Excellent idea to provide callers with an email copy of the ‘Chat’! Now just awaiting arrival of my SIM to activate.
September 23, 2021
Good service from Customer service…
Good service from Customer service colleague Ms. Marianne & fastest sent me SIM card. Will recommend to other people.
September 11, 2021
Well received the Onecall sim cards and…
Well received the Onecall sim cards and special thanks to their staff Miss. Marianne w/200% services over standard to us.
September 8, 2021
Reply from Onecallsim
Thank you for your great review. Welcome to Onecall it is great to have you onboard
So bad
So bad. They make you an account without giving you a username. When you click reset password you need to enter your username and not your email. How we meant it reset if we don’t know the username?
June 30, 2021
Reply from Onecallsim
Your account has been frozen due to fraudulent transactions and breach of terms and conditions - you cannot reset an account that is being investigated for fraud
Solid and legitimate re-seller, worth considering
I recently switched from EE to O2 via OneCall. The customer service provided to me by Marie-Anne and Mark was stellar. There was one minor hiccup during the initial stages with setting up WiFi calling and 4G calling/VoLTE, but this was quickly resolved by the team. As for the coverage, the O2 signal is definitely better indoors than EE, but EE’s speed is faster. That being said, O2’s speed and coverage has proven to be more consistent, it is and usable wherever I’ve been. For £24 a month for unlimited everything (fair use for data is 1TB I think), you can’t go wrong.
Sorry I’ve kept having to pester you guys with calls, but you’ve won yourselves a happy customer! 😁
May 20, 2021
At last I have found a vodafone service…
At last I have found a vodafone service provider on a pay as you go that includes WiFi calling.
Excellent value for money too without the need of long expensive contracts
April 21, 2021
Reply from Onecallsim
Thank you for your review. It's great to have another satisfied customer.
Marianne
NOT UNLIMITED DATA.
It isn’t unlimited data, there is a fair usage cap at 1 Terabyte to identify commercial use. This isn’t acceptable. It’s possible to use a lot more than a terabyte and still use the services in line with both operators’ acceptable use policy. They claim that the main operators operate the same fair usage cap, this isn’t true. Both Vodafone and O2 have truly unlimited data. However, O2 does mention that if you use over 650GB of data, they reserve the right to investigate usage. However, if you use the services in line with their acceptable use policy, there is no problem. Hence there isn’t a cap present. Vodafone do not have this policy.
OneCall also claim you have access to Vodafone and O2 perks, however I don’t think this is true as I did try to access Vodafone VeryMe but had no success.
If you would like unlimited data, I advise you to choose the main operator of each network. At the moment, Vodafone are the only network to offer unlimited data on prepaid with their VOXI service.
March 20, 2021
Unprompted review
Reply from Onecallsim
Thank you for your review. It's pity that you found the need to change your previously rated 5 star review. With regards to our usage cap, you were informed multiple times that if the cap was breached a customer service colleague would get in touch to discuss further options. You didn't come anywhere close to breaching the cap so I am unsure why you find this an issue. This is also set out very clearly in our terms and conditions which you consented to when you purchased your SIM
All our SIM cards come with access to Vodafone Veryme rewards and O2 priority. You know this as you were helped to access your VeryMe account by customer service representative.
In total you were helped out either on our online chat or with a direct contact call over 15 times, including 6 phone calls, and over 100 online interactions. I'm confident to say we could not have done anything else to keep you happy. I hope you are happy with your new provider and you manage to pay your bill which you failed to do with us.
Very fast and efficient service with…
Very fast and efficient service with good customer service and support. Great deals on the SIM Only 30 day rolling. Great speeds and unlimited data. Would definitely recommend
March 8, 2021
Reply from Onecallsim
Thank you for your great review. We are always grateful to hear from our happy customers
Getting 35mb download in remote…
Getting 35mb download in remote Presteigne
Powys
Excellent support via live Chat or email support
Try it you won’t be disappointed
January 5, 2021
Reply from Onecallsim
Thank you for taking the time to review OneCall. We are thrilled you happy with our service and glad that you are receiving such great speeds.
Very slow 2mbps connection
I havemt been able to get more than 2mbps since I got the sim card. Mark has been very helpful in updating me as to the problem but it doesn't help me!!
December 9, 2020
Reply from Onecallsim
I am sorry that your download speeds are still low. As my colleague explained to you, there is a tower down in your area which is affecting the local O2 network. O2 are aware of the problem but until they can correct it, it is completely out of our hands.. Apologies again, Marianne
Very good service and the customer…
Very good service and the customer service is great very helpful
November 17, 2020
Reply from Onecallsim
Thank you for taking the time to review OneCall.
The Trustpilot Experience
Anyone can write a Trustpilot review. People who write reviews have ownership to edit or delete them at any time, and they’ll be displayed as long as an account is active.
Companies can ask for reviews via automatic invitations. Labeled Verified, they’re about genuine experiences.
Learn more about other kinds of reviews.
We use dedicated people and clever technology to safeguard our platform. Find out how we combat fake reviews.
Learn about Trustpilot’s review process.
Here are 8 tips for writing great reviews.
Verification can help ensure real people are writing the reviews you read on Trustpilot.
Offering incentives for reviews or asking for them selectively can bias the TrustScore, which goes against our guidelines.