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
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
See what reviewers are saying
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
Company replied
I’m extremely happy with my experience with Oister. I called yesterday to sign up for their 5G internet service, and to my surprise, the router arrived today. The setup was quick and easy, and m... See more
Company replied
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
Company replied
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
This company invites their customers to review, whether positive or negative
At Trustpilot, it's all about human content. This business can also access our AI-assisted response tool which helps them draft replies.
How this company uses Trustpilot
See how their reviews and ratings are sourced, scored, and moderated.
I'm kindda of new customer (only a few…
I'm kindda of new customer (only a few months), but I can say that the internet is the best!. I life in the countryside and was paying an expensive fiber net that was problematic, disconnecting all the time. I changed to OiSTER cuz I though: if it is as bad as fiber net at least I am paying half. But it is strong, fantastic and we only bought 1 router. I recommend it 100 %
December 7, 2022
Unprompted review
Reply from OiSTER
Hi Emily,
Thank you very much for the nice review. - We greatly appreciate that.
We are really pleased that you are experiencing good coverage at your address, and that you are satisfied with our prices.
We are also super glad, that you want to recommend us :)
We hope for many good years with you as a customer
We wish you a wonderful day!
The best greetings
Lærke
Reply from OiSTER
Hi George,
Thank you very much for a good review.
I am glad that you had a good experience with our customer service. It's great that you give your opinion.
We strive to provide a really good service to our lovely customers!
I want to wish you a super nice day.
The best greetings,
Victoria
I have been a customer for 7 years
I have been a customer for more than 7 years now, I have Oister numbers for me and my entire family, and I recommended Oister to all my friends. Could not be more happy with the service, thank you!
November 23, 2022
Unprompted review
Reply from OiSTER
Hi Daniel,
Thank you very much for a great review :-)
We are happy to hear that you are a satisfied OiSTER customer.
We always want to give our customers the best service, so we really appreciate you noticing our work!
We also really appreciate you recommending us to family and friends.
We look forward to many good years with you.
The best greetings,
Simone
I'm very impressed
I'm very impressed. Leaving the company when I moved away took me literally a few clicks on the web page! Will come back as a customer again.
November 21, 2022
Unprompted review
Reply from OiSTER
Hi John.
Thank you so much for taking the time to review us.
We look forward to welcoming you at OiSTER again very soon.
We wish you a wonderful day!
The best greetings
Lærke
Super duper 😀
I have never experienced Any problems with them. Even when payment is slightly late they send a friendly reminder pr. SMS without making you Pay expensive fee's. Also they send u friendly reminders if you Are close to exceeding your download limits. The price is very affordable too. Customer service is tip top too. Nothing bad to say.
November 21, 2022
Unprompted review
Reply from OiSTER
Hello Jakob.
It is great to hear that you are happy and satisfied with the costumer service and our really good prices:)
We always strive to make it easy and simple at OiSTER and, of course, at good, cheap prices.
I wish you a wonderful day.
Best regards,
Lærke
Go somewhere else!
Go somewhere else!
I've had calls to EU charged, although my subscription very clearly included calls to EU.
First time, customer "service" returned to money, after many increasingly sternly worded emails. Second time they refused in the exact same scenario.
Luckily, the Danish tele market has a lot of operators who are happy to take over cancellations etc.
The Danish "Teleankenævn" is by the way where you go and submit a complaint for charges not in your contract.
November 7, 2022
Unprompted review
Reply from OiSTER
Dear Christian,
Thanks for your review.
It is correct that we offer EU-roaming telephony in our subscriptions. However, it works so that it is free to use your phone when you are abroad. That measn when you are in the EU, you can freely use your phone as if you were at home on a Danish network.
When you are in the EU, you can use SMS, MMS, calls and data for free.
What is not included in your subscription is sending SMS and making calls from Denmark to European phone numbers. Therefore, you will be charged for this kind of usage.
You can read more about consumption from Denmark to Abroad in the link below:
https://www.oister.dk/hjalp/forbrug/fra-danmark-til-udlandet/
The price depends on which country you are calling.
You can find the pricelist in the link below:
https://www.oister.dk/globalassets/filer/oister-priser-fra-dk-til-udlandet-24-11-2022.pdf
Best regards,
Sofie
Great mobile company
Great mobile company! Never had problems with them.... Always kind and helpful..... I tried some companies before.... Oister it is the best! Good quality of sound, great covering all over Denmark and very cheap..... I pay 89 Dkk for free talking and 40 GB..... Very cheap.... I will never move from OISTER. All my family having Oister and they are super happy. Thank you Oister.
November 11, 2022
Unprompted review
Reply from OiSTER
Hello Eilon,
Thank you very much for the really nice review.
We are very honored to receive a full 5 stars from you!
It's great to hear that both price, service and coverage meet your requirements - this is exactly what we want from our wonderful customers.
Thanks for sharing your opinion!
We wish you a nice week.
The best greetings,
Viktoria
I appreciate Professional client…
I appreciate Professional client services, fast and easy to use application, individual approach.
November 6, 2022
Unprompted review
Reply from OiSTER
Hi Anna,
Thank you very much for the nice review.
I am pleased that you have always received professional service and support when you have needed it! I can promise you that we will always maintain the good service level and will always work to be better than we are now!
We also always strive to make it easy and simple at OiSTER and, of course, at good, cheap prices.
I wish you a wonderful day!
Best regards,
Lærke
I ordered sim card online and I didn't…
I ordered sim card online and I didn't get it during 15 days.
this is worst case that you enter new country and order sim card to manage your life and you don't get your order after 15 ongoing days.
Customer service line always Busy 70313070
October 25, 2022
Unprompted review
Reply from OiSTER
Hello Vahid.
I am very sorry to hear, that your simcard did not arrive in time.
Sometimes simcards can get lost in the mail, and we apologize many times, if that was the reason.
unfortunately we have slightly longer waiting times, especially at the beginning of the month, but the last week, our response time has been between 0-10 minutes.
If you do not receive your SIM card after 5 working days, simply contact customer service and we will of course send a new SIM card immediately.
We also offer eSIM, which can be ordered free of charge on our website, so you don't have to wait for a SIM card.
I wish you a great day.
Best regards,
Lærke
You don’t hire Oister
Don't make the bad decision to hire Oister!
We have done so and regret it greatly!
The new Oister sim card was supposed to be sent to us and never arrived. We no longer have service with the other phone company and no longer have service with Oister.
When you try to contact customer service and no one answers, the phone number doesn't work, and they respond to emails with DAYS of delay!
Really if you have a problem no one can help you!
Do not hire OISTER! I warn you so you don't have the hard time we are having!
October 11, 2022
Unprompted review
Reply from OiSTER
Hi Dani,
I am very sorry to hear that you have an experience that we do not provide a good service.
We have a strong focus on customer service, and we always strive to provide the best possible service for all our customers.
When we send a SIM card, it is sent with PostNord. Their delivery time is 2-5 working days. If the SIM card has not arrived within 5 working days, we encourage you to contact our customer service and point out that the SIM card has not arrived.
I will grant you that there is sometimes a bit of a wait to get in contact with our customer service by phone. It is typically busiest at the beginning of a new month.
It is also always possible to write an email directly to me at kundeservice@oister.dk ATT/ Viktoria if you want me to take a look at your specific case
The best greetings,
Viktoria
Unfortunately
Unfortunately, I ma part of the 50% of customers that find this company despicable. 1 star is too generous. I agree with the others that the customer service and the waiting time is horrible & you wait 30 minutes to be told that it is Post Nord fault that they have not send you a SIM card. Basically you pay your subscription and do not have a working phone and the only thing they can do is to say sorry, but you still have to pay, even if you do not have a phone???Not to mention that they close at 15:30 on Friday, and rest on Saturdays, when it is a services working day!
October 5, 2022
Unprompted review
Reply from OiSTER
Hi Maria.
I am very sorry to hear that you have not been able to get through to our customer service.
Unfortunately, we are super busy at the beginning of the month, which results in longer response times.
I would very much like to take a closer look at your case and try to find some sort of compensation, since of course you shouldnt have to pay for a subscription that doesn't work.
If you simply write to me at: kundeservice@oister.dk ATT: Lærke, I will do my best to find a suitable solution.
I wish you a great day!
Best regards,
Lærke
Terrible service.
September 16, 2022
Unprompted review
Reply from OiSTER
Hi Iva,
I am sorry to hear, that you had a bad experience with our service.
I would love to hear more about your experience.
You are very welcome to send me an email at kundeservice@oister.dk so we can look into it further.
I wish you a great day.
Best regards,
Lærke
Below average and discriminating service.
Besides the below average coverage in the middle of the city, you need to know if you have several phones on one subscription (family subscription or whatever its called, I can't check anymore), then its ONLY the person who makes the account who can log in. If you're a spouse to that person, Oister has a new shiny system that makes sure you'll be treated like your spouses child. Not an equal paying costumer. Its one thing to create the account with nem-id, but not making it possible to log in without it, when there's multiple users, is just the most demeaning service.
August 19, 2022
Unprompted review
Reply from OiSTER
Dear I.J,
Thanks for your review.
Although we do our best to provide good coverage on our network, it is unfortunately not always possible to achieve broad coverage in all areas. There can be several factors that affect the quality of coverage, such as terrain, the number of transmission masts or the distance to the nearest mast.
It is also correct that when you become a customer of OiSTER, you can only log in with the contract persons NemID/MitID. We are an online company and continuously develop digital initiatives that mean that we are forced to ensure that it is the right owners of the OiSTER subscriptions who log in to Mit OiSTER.
We have made sure to increase security so that we can look after our customers' data and information as best as possible, so I am sorry to read that you find this discriminating.
The best greetings,
Sofi
Reply from OiSTER
Hej Hans,
Tusind tak for de 5 stjerner og den rigtig fine anmeldelse, det sætter vi stor pris på!
Det glæder os at høre du er en glad og tilfreds kunde.
De bedste hilsner,
Mathilde
Very good service everything working…
Very good service everything working perfectly.
Very good value
July 24, 2022
Unprompted review
Disaster
As a customer for around 10 years I expected proper service.
I used to be happy with Oister until today!
I requested a number transfer from another carrier to Oister a week ago. According to the emails received from Oister the transfer was about to happen today. So far so good. I received email stating that the QR-code for my esim is ready and I can active it from mitoister but guess what. After logging into mitoister I realised that there is no QR-code at all and I am left without a phone. I tried reaching customer service via email, cued for over an hour on the phone without success. Ridiculous!!!
So far I’m left without a phone for 24 hours and counting!!!
What are you going to do about it? Simple sorry isn’t acceptable at all!
July 18, 2022
Unprompted review
Reply from OiSTER
Dear Frustrated Customer,
Thanks for your review.
I'm sorry to hear that your experience with OiSTER has been so unfortunate - it's definitely not how it should be.
Normally, it will be possible to download the eSIM the evening before the number transfer, so you are sure that the eSIM is ready for use the next day.
However, I am sorry to read that is not the case here.
In this case, we would always recommend that you contact Customer Service so that we have the opportunity to correct this.
If you continue to experience problems with eSIM or your SIM card, I would recommend that you contact us on 70 31 30 70, where my nice colleagues are ready to help.
Best regards,
Sofie
Best mobile service so far ❤🙌🎊🎊
July 3, 2022
Unprompted review
I have talking with one young lady and…
I have talking with one young lady and she was very fast rude without having experience talking about buying one phone ,and very easy she told me * go check in costumer shop* that all,,i am very sorry but like that ,, easy to lost your costumers
July 2, 2022
Unprompted review
Super.................................
July 1, 2022
Unprompted review
Worst of the worst
The absolute worst experience I have ever had with a phone service provider.
Constant extra costs, long waiting times, incompetent staff who do not help you have waiting 40 mionutes on the line. Bad connection. Do not go for this provider.
July 1, 2022
Unprompted review
Reply from OiSTER
Dear Odin,
Thank you for your review.
I'm sorry to hear that your experience with OiSTER has been so unfortunate - it's definitely not how it should be.
Like many other companies, we are often very busy at the beginning of the month, which results in longer response times to mail and the phone. However, we do our best to get through to everyone as quickly as circumstances allow.
Best regards,
Sofie
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.