o2 Deutschland Reviews 

The internet has been cut for 4 days for the second time in the same month and before also. It is totally painful to spend days without internet where my freelance work depends on it

they r leasing routers (fritzbox) that r outdate garbage, noone sane would buy this overprices shit. This routers keeping overheating, not aimed to toodays usage, but supporting dinosour fax/phone cables. Much efficient to buy a 20-25$ router and ONU terminal (25-30$) for optic connection, instead of paying 60$/year for garbage. Hope they gonna banckrupt for ruining others experience, they should not exist with such awfull service and attitude with clients, but somehow in germany they exist.

Piece of shit, this internet one of the worst things ever, lagging every day, bad speed, satan create this quality connection…..

Godawful company. Website is awful and never works (I haven't been able to log in to my account on the O2 website on my phone in 6 months, because every time I click the log in button, it brings me to a blank page that never loads; why is this not fixed?) They have stolen my money and screwed with my prepaid plans multiple times. They refunded my account and fixed the issue last time their system double charged me for 2 different plans, but for some reason, this time they "cant" refund me. This time, I had 9.28 euro on my O2 account. I had cancelled automatic top-ups twice and for some reason, the website never worked and didn't activate my cancellation either time. So they charged me 10 euro, which they took from my O2 account (no idea what they were taking that to pay for, as I had already paid for my prepaid plan and had 10 days left.)Then they charged me 4 more euro because I didn't have enough money on my account. Then they charged me another 10 euro the next day, and another 4. So my account went from 9.28 to -18.72 because of their system. I want to know why you people are taking that money from my O2 account. What are you stealing it for???
They refuse to take any accountability, customer service is horrible and useless, and they never respond to anything. Don't bother submitting a complaint form or calling. You won't hear back. Never ever ever use them if you can avoid it. I wish I had never signed up for them and will tell everyone I know that they are the worst phone company I have ever used. I want my money back, and I was planning on using it towards the next month, but I wont get it because they refuse to answer anything. They are the worst people on the planet and I hope they go bankrupt.

Horrible horrible company. Website is awful and never works (I haven't been able to log in to my account on the internet on my phone in 6 months, because every time I click the log in button, it brings me to a blank page that never loads, why is this not fixed?) They have stolen my money and screwed with my prepaid plans multiple times. They refunded my account and fixed the issue last time, but for some reason, this time they "cant" refund me. This time, I had 9 euro on my O2 account. I had cancelled automatic top-ups twice and for some reason, the website never worked and didn't activate my cancellation either time. So they charged me 10 euro, which they took from my O2 account (no idea what they were taking that to pay for, as I had already paid for my prepaid plan and had 10 days left.)Then they charged me 4 more euro because I didnt have enough money on my account. Then they charged me another 10 euro the next day, and another 4. So my account went from 9.28 to -18.72 because of their system. They refuse to take any accountability, customer service is horrible and useless, and they never respond to anything. Never ever ever use them if you can avoid it. I wish I had never signed up for them and will tell everyone I know that they are the worst phone company I have ever used. I want my money back, but I wont get it because they refuse to answer anything.

Horrible. I signed up and am trying to complete the verification to activate my plan, but the system is completely archaic and lacks any proper management. You have to join a video call with the support agents, and they simply skip over you. "Horrible" is an understatement—seriously.

Finger weg von o2

If I could rate the service, I would give it a very low(-0) score.

The internet connection and customer service have not met my expectations. Based on my experience, I would not recommend o2 for a reliable internet service.

I signed a contract at the o2 shop in Paderborn on 04.07.2026. The first technician appointment was scheduled for 27.07.2026. I took a day off work and stayed at home, but the technician did not arrive. Later, I was informed that a report had been made stating an issue with the doorbell, which was not accurate, as visitors were able to reach me that day without any problems.

Afterwards, a second appointment was arranged, but again no technician came. When I contacted customer service, I was told that only the appointment had been scheduled and no further action had been taken.

As a result, I have taken time off work twice and still do not have an active internet connection.

I previously used 1&1 and Telekom, and both services were acceptable. However, I was advised by my husband to switch this time, and I now realize that this was not a good decision for me. Finger weg

They have outages everywhere in Munich and even though you call them they dont do nothing about it!!!

I am a Loyal customer of O2 a decade. When I try to extend the contract they rejected it, I dont know why this company doesn't give a shit about their LOYAL customers. I am going to change it now

Scam and horrible company just stay away if you dont want any headache, look to the following without any information and without telling them a single word they they throw a new contract at me or added in my account and i really dont know if i will be able to get out of this trap and dont know where to complain. Neuer Vertrag
0, Mobile Unlimited M (2026), look at the this biggest scammers now i dont know to knock the door of court or what to do

I have ordered macbook pro in installments years ago from this scam company. But they never delivered the macbook neither sim card. As they can see it was never activated. Now guess what happened later. This scam company charges me now 100 euro for nothing. Still to this day I receive invoices. They even sent it to lawyers despite I have million times emailed them and even talked to customer service. Of course their customer service nearly doesn't exist. Worst company ever.

Very bad and terrible network. I have been using it since 2 years just because i am on contract for O2 homespot. I tried to cancel the contract but then i have to pay a one time amount to close the contract for the O2 router.

if there were 0 stars, that would be more suitable.. if you are looking for a home internal O2, it is not an option, it is the same as not having it!!! don't waste your time and money on this

I signed a contract for home internet on June 15.
The rep said my activation date was July 7 but that sometimes it happens sooner.

At no point on July 7 did the internet work, despite following all directions from the app to set everything up. I reset router many times and called help desk who said nothing could be done until 22:00, at which time of course the help desk is no longer open.

I called the next day again. No one could help that day they said: “call back tomorrow 9-17:00.”

I called back the next day. They can’t help either and give me a different number to call.

That number gave me a ticket number and said to wait for an email. I received no email, but one phone call which I missed due to being in a meeting. I called back. No help again.

I received a text saying Tritek was trying to reach me. I attempt to call the number listed, but it is unavailable. I email them. No answer. It’s now July 11 and I need the connection to work from home.

My phone contract is ending soon and o2 is asking if I want to re-sign my contract, but at this point I can’t imagine ever signing a contract with them again.

Do not trust anything O2 promises you over the phone. I cancelled my contract, and their retention team called me times in the last month, and during the last call, they were offering 15 GB for €8.49. I agreed. Instead, they activated only 5 GB in their system for that price.

Because the first invoice arrives a month later, you only spot the lie after their standard 14-day withdrawal window closes. Then, customer service hits you with a brick wall, claiming you are "too late" to cancel.

To top it off, I successfully ported my number away to another network. To keep charging me anyway, O2 generated a random substitute "ghost" number on my account and locked the contract until 2028.

They are completely ignoring my legal GDPR requests to produce the call recording. I've had to file a formal complaint with the Federal Network Agency (Bundesnetzagentur).

Avoid O2 Germany at all costs, I mean, look at their review score here in trustpilot...
I guess this is my fault, had I seen these reviews I would not have started anything in the first place with O2.

O2 can do, O2 cannot do when it comes with cancellations.

Agit and Filiz were brilliant at the O2 shop in Berlin Central Station. The only people that helped me when my bag had been left on the train and I had no battery. They gave me power, water and a cool supportive space to get myself sorted. Thank you!

o2 sim card from my expirience has no good internet signal in 50% of the city Wiesbaden. Also their home internet O2 that im using goes off randomly, especilly on weekends when i try to have some fun and play online games with old friends.O2 home internet goes off at 2:04 am every SINGLE night . If you need a stable internet for work, gaming AVOID!!!!.

For more than four weeks during April and May, we had no internet service from O2.

Every time we contacted customer support, we were told that the issue was a “Vodafone outage” and that nothing could be done. This explanation was repeated for three consecutive weeks.

Only after the fourth week was a technician finally sent. He arrived, immediately confirmed that the problem had absolutely nothing to do with Vodafone, fixed the issue in less than five minutes, and left.

Despite multiple requests, O2 has completely ignored our attempts to discuss compensation or reimbursement for an entire month of paying for a service we did not receive.

Unfortunately, the story does not end there.

While we were abroad on vacation, our internet was disconnected again, leaving us unable to access the security cameras in our apartment. Returning home after traveling internationally only to discover that there is still no internet connection is simply unacceptable.

Now, once again, customer service is repeating the exact same explanation about a “Vodafone outage.” After what happened previously, it is very difficult to trust this information.

In 2026, reliable internet is not a luxury it is an essential service. People work remotely, monitor their homes, communicate with family, and manage their daily lives online. Leaving customers without service for weeks, providing inaccurate information, and then refusing to address billing concerns demonstrates a serious lack of accountability and customer care.

Customers should not be expected to pay for services they did not receive, nor should they have to fight repeatedly just to receive honest communication.

This level of service is deeply disappointing and falls far below what customers should reasonably expect.

Basically O2 became the biggest scam!

I contacted O2 Customer Service and spoke with the Contract Department regarding an issue with my HomeSpot SIM card. Unfortunately, I experienced very poor customer service from the agent handling my call.

The agent asked about my router configuration, and I explained that I use the following address to configure my HomeSpot router: tplinkmodem.net. He immediately told me that I should contact TP-Link to resolve the issue. However, I clearly explained that the problem is with the SIM card, not the router. The SIM card does not work in other devices either, while my other O2 SIM cards work perfectly in the same router.

As a result, my issue was not addressed or resolved during the call. I have been without internet service on this SIM card for two weeks, and the situation remains unresolved.

In addition to not helping with the issue, the agent’s behavior during the call was unprofessional and unpleasant, which made the experience even more frustrating.

I would appreciate it if this matter could be investigated and my SIM card issue resolved as soon as possible.

The best company which is providing me services for the last 22 years, uninterrupted.
Wonderful