All in all, I am satisfied by the service and the price. It's a quite affordable solution. I subscribe for a year, automatic payments every month, no problem. Due to my bad Danish (an improved... See more
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Had a bit of trouble buying Sim with the website. But Jakob from customer service team helped me out a lot and set me up with the preferred number and mobile subscription. He even helped out for esim... See more
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I received a call and was internet for home from Oister. Prices were looking good and we agreed that start date will be 1st of August when binding period with my current internet provider ends. They... See more
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I placed an order for 4 products, but only 1 arrived in the package. To make matters worse, OiSTER is demanding full payment for all 4 items! I contacted their customer support to get this sorted... See more
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Company details
About OiSTER
Written by the company
OiSTER er et lavprisselskab med fokus på mobiltelefoni og mobilt bredbånd. Grundlaget for OiSTER har altid været at gøre det nemt og billigt for OiSTERs kunder. Det forsøger vi konstant at leve op til, hvorfor vi er stolte af vores slogan ’Bedst til prisen’.
Mobilt Bredbånd hos OiSTER:
OiSTERs mobile bredbånd er den bedste lavpris løsning på trådløst internet, som du kan tage med dig overalt i Danmark. Vi kalder det Danmarks nemmeste internet, fordi det er nemt og hurtigt at installere. Desuden benytter vi 3s prisvindende netværk.
Mobiltelefoni hos OiSTER:
OiSTER blev først kendt for at levere Danmarks bedste mobile bredbånd til prisen. Det er den samme tankegang, der danner grundlaget for mobiltelefoni hos OiSTER, nemlig at du får mobiltelefoni på landets bedste mobilnetværk - nemt, enkelt, overskueligt og ikke mindst til en konkurrencedygtig pris.
Grundidéen for OiSTER er, at dit mobilabonnement er gennemskueligt og uden binding. På oister.dk kan du nemt følge dit forbrug og eventuelt ændre dit mobilabonnement, hvis dine behov ændrer sig.
Mobilt Bredbånd hos OiSTER:
OiSTERs mobile bredbånd er den bedste lavpris løsning på trådløst internet, som du kan tage med dig overalt i Danmark. Vi kalder det Danmarks nemmeste internet, fordi det er nemt og hurtigt at installere. Desuden benytter vi 3s prisvindende netværk.
Mobiltelefoni hos OiSTER:
OiSTER blev først kendt for at levere Danmarks bedste mobile bredbånd til prisen. Det er den samme tankegang, der danner grundlaget for mobiltelefoni hos OiSTER, nemlig at du får mobiltelefoni på landets bedste mobilnetværk - nemt, enkelt, overskueligt og ikke mindst til en konkurrencedygtig pris.
Grundidéen for OiSTER er, at dit mobilabonnement er gennemskueligt og uden binding. På oister.dk kan du nemt følge dit forbrug og eventuelt ændre dit mobilabonnement, hvis dine behov ændrer sig.
OiSTER
Written by the company
Contact info
Fadet 4, 1799, København V, Denmark
- 70313070
- kundeservice@oister.dk
- www.oister.dk
4.1
Great
29K reviews
Asks customers to review
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Reply from OiSTER
Hi Raju,
Thank you for your review. We’re happy to hear that you have had a very good service experience with us, and we hope to keep delivering that level of quality in the future.
Best regards,
Camilla🌊💜
I have tried emailing and calling with…
I have tried emailing and calling with no luck. They say they will reply within two business days but it is not true. I am unable to access my account and am at a loss.
7 August 2025
Unprompted review
Reply from OiSTER
Hi Leonna
Thank you for your feedback — we’re really sorry to hear about the trouble you've had reaching us and accessing your account.
We understand how frustrating this must be, and we want to help resolve it as quickly as possible. Please contact us via Trustpilot@oister.dk and we’ll do our best to get it sorted for you.
Best regards Anne
God intuitivt side med klare…
God intuitivt side med klare instruktioner og god kommunikation
31 July 2025
Reply from OiSTER
Kære Jens
Tusind tak for din anmeldelse!
Vi er glade for, at du oplever vores hjemmeside som intuitiv og nem at bruge – og at instruktionerne og kommunikationen lever op til dine forventninger. Det er vigtigt for os, at det hele føles enkelt og klart.
OiSTER sender de bedste bølger din vej – hilsner fra Anne🌊🐚
Nice presentation
I talked with your sales man named Magnus, he is explained everything clearly and freindly, I'm very happy with the experience.
Tahnk you
23 July 2025
Reply from OiSTER
Hi Mojtaba
Thank you for your review! We're happy to hear that Magnus provided a clear and friendly explanation. Great service starts with good communication – and we’re glad you had a positive experience 😊
Best regards
Camilla
Waiting for my eSIM already abt 5 days
21 July 2025
Reply from OiSTER
Hi Sanjeev
Thank you for your review.
When you request a number transfer, there is a waiting period before your number is moved over to us. The exact timing depends on whether you selected an immediate transfer or a standard one. Your simcard will only become active once the number has been successfully transferred.
If you'd like us to check the status of your order and make sure everything is going as expected, please don’t hesitate to reach out to 70 31 30 70 or at Trustpilot@oister.dk
Best regards Anne
They keep on charging more money and…
They keep on charging more money and they are unreachable
23 July 2025
Unprompted review
Reply from OiSTER
Hi Chantal
We’re sorry to hear about your experience – that’s certainly not how it should be. We’d very much like to look into this for you and clarify what has happened.
Please reach out to us directly at our Trustpilot email: trustpilot@oister.dk – remember to include your phone number or customer ID, so we can locate your account and help you as quickly as possible.
Thank you for bringing this to our attention.
Best regards
Camilla
Reply from OiSTER
Hi Anna
Thank you for your review! We’re happy to hear everything went smoothly and that you had a good experience getting your number set up.
Welcome to OiSTER!
Best Regards
Camilla
Reply from OiSTER
Hi Aiman
Thank you so much for your kind words! We truly appreciate your support and encouragement – it means a lot to us. We’ll keep working hard to live up to your expectations.
Best regards
Camilla
Affordable subscription to all kinds of…
Affordable subscription to all kinds of customers.
9 July 2025
Reply from OiSTER
Hi Marina
Thank you so much for your review!
We truly appreciate your feedback and are happy to have you with us!
Best regards
Anne 🌊🦀
Reply from OiSTER
Hi Thomas
Thank you so much for your kind words! 😊
We’re thrilled to hear that you’ve had a great experience with our service and website. Your support means a lot to us!
Thanks for being part of the OiSTER community.
Best regards
Camilla
The user experience was excellent
The user experience was excellent; obtaining a mobile number was simple and straightforward.
11 June 2025
Reply from OiSTER
Hi Pedro
Thank you so much for your review!
We’re thrilled to hear that you found the user experience excellent and the process of obtaining a mobile number simple and straightforward. Making things easy and smooth for our customers is exactly what we aim for. We're happy to have you with us!
Best regards
Anne
Meget nem at handle med OiSTER.
9 June 2025
Reply from OiSTER
Hej
Tak for din anmeldelse! Vi er glade for, at du oplever det som nemt at handle med OiSTER – det er præcis, hvad vi stræber efter.
En bølge af taknemmelighed – hilsner fra Camilla🌊🦀
It was a great first experience with…
It was a great first experience with Oister. The person who took care of me during my call has been kind, supporting. He helped me to choose the most suitable abonnement. He was patient. He explained the conditions of the abonnement in a clear manner.
6 June 2025
Reply from OiSTER
Hi Agnes
Thank you so much for sharing your first experience with OiSTER!
We’re thrilled to hear that our colleague was kind, supportive, and took the time to guide you through choosing the right abonnement. Clear communication and patience are values we truly care about, so it’s great to know that came through.
Best regards,
Anne
Reply from OiSTER
Hi Mihaita
Thank you so much for your review!
We're thrilled to hear that you're very satisfied and that our colleague made a great impression. We always aim to provide helpful and friendly service, so it's wonderful to know that it came through.
Best regards,
Anne
Affordable and good service
1 June 2025
Reply from OiSTER
Hi Arco
Thank you so much for your review!
We're glad to hear that you find our service both affordable and good. Your feedback truly means a lot to us.
Best regards Anne
Good initiative
I like the fact that I was called before my current subscription expires and got asked if I wanted to join Oister back.
The agent was very knowledgeable and nice to talk to. He is a super star.
20 May 2025
Reply from OiSTER
Hi Djohn
Thank you so much for your kind review!
We're glad to hear you appreciated the call and that our agent made a great impression. We truly value your trust and are happy to welcome you back to OiSTER.
Please don’t hesitate to reach out if you have any questions or need assistance in the future.
Best regards
Camilla
scamming customers
shitty company that makes its profit off by scamming its users with hidden fees and automatic top offs. stick to a real, trustworthy company. I'm ending my service with them
14 May 2025
Unprompted review
Reply from OiSTER
Hi Kris
We’re truly sorry to hear about your experience. That’s certainly not the impression we want to leave, and we take feedback like this very seriously.
We aim to be fully transparent with our prices and services, including automatic top-ups and any fees, which are clearly described in our terms and conditions. However, if anything has felt unclear or misleading, we sincerely apologize.
We’d really appreciate the chance to look into your case and help clarify or resolve the issue. You’re very welcome to contact us directly at trustpilot@oister.dk, so we can assist you personally.
Best regards
Camilla
Very cool I hope it’s good as well
23 April 2025
Reply from OiSTER
Hej Alexandre
I'm glad you think so! 😊 I hope your experience with OiSTER is just as great as it seems so far. If you need anything or have any questions, feel free to reach out. Enjoy your new service!
Best regards
Camilla
Always great and reliable
Always great and reliable! Thanks. Long term happy customer with multiple SIMs
23 April 2025
Reply from OiSTER
Hi Mircea
Thank you so much for your kind words! 😊
We’re thrilled to hear that you’ve had such a positive experience and that you’ve been a long-term happy customer with multiple SIMs. It means a lot to us to know that we’ve been able to provide you with reliable service over the years!
If you ever need assistance or have any questions in the future, don’t hesitate to reach out – we’re always here to help.
Best regards
Camilla
Reply from OiSTER
Hi Xianli
Thank you for your great review! We're thrilled to hear that your order was delivered so quickly. We strive to provide fast and reliable service, and it's fantastic to know we met your expectations.
If you need anything else, don't hesitate to reach out!
Best regards
Camilla
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