It is the first time that I buy an eSIM card to go from Canada to UK. Because I hadn’t receive e confirmation email, I could have help from Christina. She was very patient and could answer all my ques... See more
Company replied
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
Review summary
Created with AI, based on recent reviews
What people talk about most
Reviews shaping this summary
I bought a SIM card for the USA. It provides enough data for the 10 days that I was in America for a fraction of the cost that my mobile network would have charged. You'll need an internet connectio... See more
Company replied
We were in Trinidad and Tobago for over 2 weeks and needed eSIM(s) for data. After lots of research before and after arriving we found esimcards.co.uk. Unlike all the other offerings you can get... See more
Company replied
I have bought eSIM online and I had trouble activating it because I don’t have a printer to scan the code and I messaged now Support team which they helped greatly and they were on with me until I ac... See more
Company details
- Telecommunications service provider
- Internet provider
- Internet Service Provider
- Mobile network operator
- Phone and internet services
- Telephone company
Written by the company
At eSIM Cards, our goal is to make staying connected while traveling as easy as possible. With our digital SIM (eSIM) technology, you can instantly get access to high-speed mobile networks in over 100+ countries—no need to swap SIM cards or pay expensive roaming fees. Whether you’re traveling for work, on vacation, or living abroad, we offer simple activation, reliable coverage, and affordable data plans to fit your needs. We believe in honesty, convenience, and great customer service. Our support team is available 24/7 to make sure you’re always connected—wherever your journey takes you. Stay connected. Stay global. Choose eSIM Cards.
Contact info
27 Old Gloucester St, WC1N 3AX, London, United Kingdom
- support@pentagramsystems.co.uk
- esimcards.co.uk
4.2
Great
71 reviews
No recent history of asking for reviews
This company hasn't invited customers recently, so reviews may not be representative
Replied to 55% of negative reviews
Typically replies within 1 month
How this company uses Trustpilot
See how their reviews and ratings are sourced, scored, and moderated.
Responsive
Responsive. Feels like a real person not a bot. Christina RS was very helpful at getting my internet restored when it wasn’t working. She was patient.
20 July 2026
Unprompted review
Support was excellent i had a problem…
Support was excellent i had a problem in delivery they make sure its resolved very happy with support.
Thank you
19 July 2026
Unprompted review
Great esim card
I have bought eSIM online and I had trouble activating it because I don’t have a printer to scan the code and I messaged now Support team which they helped greatly and they were on with me until I activated it. Thank you so much. Definitely wouldn’t buy again from this website.
17 July 2026
Unprompted review
Excellent eSIMs
Excellent eSIMs, excellent service from Cristina C - had an issue that was resolved immediately with a minimum of fuss
16 July 2026
Unprompted review
Issue resolved
I had an issue and this kind, patient person called Christina MV helped me profoundly. Really polite, made it so easy for me I didn’t even have any follow up question!
15 July 2026
Unprompted review
My customer service representative: Kumar
My customer service representative, Kumar, was extremely helpful. He was fast to respond and gave complete and understandable instructions so I was able to buy my e-sim with confidence. He completely answered all of my questions! His Service was impeccable!
10 July 2026
Unprompted review
I had a great experience with resolving…
I had a great experience with resolving my issue and it was really fast , christina k did an amazing job and was very nice to me and also was very very fast
7 July 2026
Unprompted review
eSIM UK saved me again
eSIM UK saved me again. Tried to buy an eSIM again from the big networks. Two an half hours later I had paid but they couldn’t activate. While I was arranging my refund, eSIM UK sold and activated a new eSIM in about five minutes. Thanks Christina MV.
22 June 2026
Unprompted review
Reply from eSIM Cards UK
Dear Neil,
Thank you for your wonderful feedback! We’re delighted to hear you were able to get connected quickly and had a smooth activation experience.
We truly appreciate your trust and support, and we look forward to serving you again on your future travels.
Best regards,
The eSIM Cards UK Team
great service !Was little problem but…
great service !Was little problem but was very quickly resolved! highly recommend
17 June 2026
Unprompted review
Reply from eSIM Cards UK
Dear Lilly,
Thank you for your wonderful feedback! We’re glad to hear your issue was resolved quickly and that you had a great experience with our service.
We truly appreciate your recommendation and support!
Best regards,
The eSIM Cards UK Team
O2 esim - Europe and England
Support team are helpful.
Required significant troubleshooting to fully enable the e-sim. There were quite a few email exchanges between me and the support team. I could not get Google maps to work immediately on activation in the first destination of my travel. More work is needed in relation to product development to ensure that purchase and activation is seamless right out of the box.
Settings in my android phone required manual tweaking to ensure that I could still received SMS messages for 2 factor authentication from my bank in my home country of Australia. I have a late model Samsung Galaxy phone. Users who are not very tech savvy would be very frustrated by this product.
Users need to be very clear about when to activate the esim.
Scope of the esim – it can be difficult to understand where the e-sim will and will not work. I wanted an e-sim to work in Europe. A google search for the product reveals words to the effect ‘all of Europe,’ in bait advertising. The esim I purchased for my trip in Europe, did not cover all of Europe. I was disappointed to find out that the esim did not work in Switzerland. The scope of the product needs to be clearer in all communications, including bait advertising.
Esim provided services in England which I needed. However, the phone and internet services is based in France. This needs to be clearer.
At the time of writing this review I am in Rome Italy. When using the esim in this city, I see the error message frequently, ‘You are not connected to the internet.’ Coverage has not been good in Rome.
16 June 2026
Unprompted review
Reply from eSIM Cards UK
Dear Anthony,
Thank you for taking the time to share such detailed feedback. We’re pleased to hear that our support team was able to assist you throughout the setup process.
We also appreciate your suggestions regarding activation guidance, coverage information, and improving the overall setup experience. Feedback like yours is invaluable, and we will share it with our product team as we continue to enhance our service and documentation.
Thank you for choosing eSIM Cards UK, and we truly appreciate your support.
Best regards,
The eSIM Cards UK Team
Extremely helpful quick responses from…
Extremely helpful quick responses from customer service to my issue. Very impressed.
9 June 2026
Unprompted review
Reply from eSIM Cards UK
Dear Julia,
Thank you for your wonderful feedback! We’re delighted to hear you received quick and helpful support and that you were impressed with our customer service.
We truly appreciate your support!
Best regards,
The eSIM Cards UK Team
Prompt and professional customer care support
I had an issue with my subscription and Christina MV helped sort it out. She did this promptly and professionally.
6 June 2026
Unprompted review
Reply from eSIM Cards UK
Dear Daisy,
Thank you for your wonderful feedback! We’re glad to hear your subscription issue was resolved promptly and professionally.
We truly appreciate your support!
Best regards,
The eSIM Cards UK Team
Reply from eSIM Cards UK
Dear Paul,
Thank you for your kind feedback! We’re delighted to hear you had a great experience with our responsive customer support.
We truly appreciate your support!
Best regards,
The eSIM Cards UK Team
Reply from eSIM Cards UK
Dear Prajith,
Thank you for your wonderful feedback! We’re delighted to hear you had an excellent experience with our service.
We truly appreciate your support!
Best regards,
The eSIM Cards UK Team
Reply from eSIM Cards UK
Dear Finley,
Thank you for your kind feedback! We’re glad to hear you had a good experience with our customer service.
We truly appreciate your support!
Best regards,
The eSIM Cards UK Team
Been working with this site for over a…
Been working with this site for over a year now it is the best esim provaider for sure BIG thanks to Cristina J for being my assistant in trouble!
28 May 2026
Unprompted review
Reply from eSIM Cards UK
Dear Jovica,
Thank you for your wonderful feedback and for being a valued customer over the past year! We’re delighted to hear you’ve had such a positive experience with our service.
We truly appreciate your continued trust and support!
Best regards,
The eSIM Cards UK Team
I was having issues with my e-sim and…
I was having issues with my e-sim and contacted customer support and Kumar found the problem and had my issue resolved very quickly. Very good customer service compared to a few others I've experienced.
27 May 2026
Unprompted review
Reply from eSIM Cards UK
Dear Ben,
Thank you for your wonderful feedback! We’re delighted to hear your eSIM issue was resolved quickly and that you had a great support experience with our team.
We truly appreciate your kind words and your support!
Best regards,
The eSIM Cards UK Team
Christina helped me via chat and was…
Christina helped me via chat and was very professional and efficient in her service to me. She provided patience and stayed with me for long time on the chat. Thank you Christina Jacobs, MV
17 May 2026
Unprompted review
Reply from eSIM Cards UK
Dear Valued Customer,
Thank you for your wonderful feedback! We’re glad to hear you had a professional and supportive experience and that the assistance provided was helpful throughout the process.
We truly appreciate your kind words and support!
Best regards,
The eSIM Cards UK Team
Thanks to Parto
Thanks to Parto, the problem with my E-sim from Japan was solved. Very professional and helpful. Good customer service.
16 May 2026
Unprompted review
Reply from eSIM Cards UK
Dear Valued Customer,
Thank you for your kind feedback! We’re glad to hear your eSIM issue was resolved and that you had a professional and helpful support experience.
We truly appreciate your support!
Best regards,
The eSIM Cards UK Team
Reply from eSIM Cards UK
Dear Valued Customer,
Thank you for your kind feedback! We’re glad to hear you had a great and helpful experience with our service.
We truly appreciate your support!
Best regards,
The eSIM Cards UK Team
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.
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.