Telekom Mobile Coverage at Cordia Woodland: No Signal Across the Building
Flats, stairwells, storage areas, the underground garage – months of emails, repeated floor plan requests, no site visit, and in the end a paid offer that covered only the garage
Location: Cordia Woodland, Vágóhíd utca 9, 1097 Budapest – buildings A and B
Problem: weak or zero Telekom signal in the flats, stairwells, storage areas and underground garage
Duration: since 2 March 2026 – 231 days, still unresolved
Result: a paid offer for the underground garage only
In February I moved into the Cordia Woodland complex at Vágóhíd utca 9, 1097 Budapest, in the middle of District IX. It's a newly built, 10-storey complex with several hundred flats, where Telekom's fibre network runs into every flat. The fibre internet works. Telekom's mobile service inside the building – to put it mildly – doesn't really.
This case study is about how I tried to get Telekom to deal with the problem properly, how much time passed between each step, and how it ended. At the end, a table sums up how long it all took. It's one of those cases that cost me not only time but nerves – and probably a few more gray hairs.
The Situation: It's Not Just the Garage
The problem affects buildings A and B, several flats and the common areas:
- Underground garage, storage areas, stairwells: zero Telekom signal. Drive into the garage or step into the stairwell, and the call drops. Anyone can reproduce it in minutes.
- In my flat: a single bar of 4G/LTE. In the bedroom there isn't even EDGE, and the phone often drops off the network completely.
- At the front door: measured bandwidth of about 2–3 Mbps.
- Phone calls: inside the flat they only really work through Wi-Fi calling (VoWiFi).
I'm not alone. The complex has more than 240 neighbours, and the same problem keeps coming up among us. Maintenance staff and cleaners also complain that they can't make calls in the building. According to Cordia, all three mobile operators were notified about the coverage problem, and Yettel and One had already installed signal boosters in the building.
A side story that says a lot: my car has a SIM-based alarm. With no Telekom signal in the garage, the car sent no signal for hours, so the dispatch service kept calling me at night – and waking me up. The fix in the end was to take out a One subscription and put a One SIM card in the car. So at that point, Telekom had already lost a subscription.
The Correspondence, Step by Step
February 2026
Moving in
I move into Woodland – and soon find out that Telekom's mobile network is barely usable, or not usable at all, inside the building.
2 March 2026
The first complaint
I file a formal complaint with Telekom's business customer service: in buildings A and B, in several flats and in the common areas, 4G and 5G signal and bandwidth are weak, and in the storage areas and garage there is no service at all. I mention that Cordia notified all three providers, that One and Yettel had already installed repeaters, and ask when Telekom plans to act. I also write that if it isn't solved, I'll have to take legal steps to terminate the subscriptions, because as things stand they're unusable.
4 March 2026
First floor plan request
Telekom asks for more information to investigate: fill in an attached data form and send the floor plan of the address.
Afterwards
Screenshots, a marked map, 3D renderings
I send everything a resident possibly can: screenshots, a map with the problem areas marked, the 3D renderings made by Cordia, and a link to the official Cordia project page. This is a 10-storey, large, well-known complex – not a hard-to-find farmhouse.
12 March 2026 – 13:07
"No central fault" – VoWiFi switched on
Telekom's reply: according to their records there is no central fault, so for the individual problem they recommend VoWiFi, and they've switched it on for my number. In its own VoWiFi description, Telekom lists new-build residential complexes as a typical case – so they know very well this is a real, known problem.
12 March 2026 – 13:15
Eight minutes later: and the garage, stairwells, storage?
I reply: VoWiFi at best solves my bedroom problem, because there's Wi-Fi there. In the garage, storage areas, stairwells and common areas there's no Wi-Fi – what's the solution there, and what does it take to have normal Telekom service across the whole building? This is the email where I also told them the car alarm story.
19 March 2026
Second floor plan request
About the signal booster, Telekom again asks me for the floor plan of Vágóhíd utca 9.
25 March 2026
My reply: a technical survey is not the resident's job
I point out that Cordia Woodland's technical documentation is available at Cordia and the authorities. Telekom itself built the fibre into the flats – a Telekom sales rep even called me personally to say the fibre was already run to my flat and only needed activating – so it should know its own network on site. I'm a homebuyer, not a Telekom subcontractor. I also mention that in 2023, a similar issue took 8 months to fix.
My request: contact Cordia, send a technician, and look into why Yettel and One could install boosters and Telekom couldn't.
My request: contact Cordia, send a technician, and look into why Yettel and One could install boosters and Telekom couldn't.
26 March 2026
My own flat's floor plan and measurements
I send the floor plan of my own flat and my measurements, and ask how it will be handled as personal data – because I keep being asked for floor plans, yet I can't find anything about it in their terms and conditions or privacy notice.
13 April 2026
Telekom's answer
– to their knowledge, no other provider has a signal booster on site;
– Telekom provides coverage above ground;
– boosters for the garage level and common areas are only installed at the request of the developer or the property management, so they ask for the property management's contact details;
– inside the flat, they still recommend VoWiFi;
– Telekom does not request or handle flat floor plans, so it isn't in the terms – my floor plan was deleted.
– Telekom provides coverage above ground;
– boosters for the garage level and common areas are only installed at the request of the developer or the property management, so they ask for the property management's contact details;
– inside the flat, they still recommend VoWiFi;
– Telekom does not request or handle flat floor plans, so it isn't in the terms – my floor plan was deleted.
14 April 2026
The next day, I send Cordia's contact details
As requested, I send the phone number and email address of Cordia's customer service.
16 April 2026
"We'll contact Cordia"
Telekom thanks me for the contact details and says they'll get in touch with Cordia about the signal booster.
18 June 2026
After two months of silence, I ask
I ask when there will be coverage at the address.
After 18 June
"We contacted the building, no reply"
Telekom's answer: they contacted the building in a letter dated 16 April 2026 and haven't had a reply since. They attached the letter. So according to Telekom, the ball is in the building's court.
3 July 2026
The offer: paid coverage – for the garage only
Property management received an offer from Telekom: coverage for the underground garage only, as a paid service. The offer said nothing about the flats, stairwells or storage areas.
15 October 2026 – 04:00
When VoWiFi goes too
Telekom's fibre internet goes down – and with it the Wi-Fi calling that Telekom had been recommending as the solution for months. I wrote up the details in a separate case study.
What doesn't add up for me:
Floor plans and data – again and again. Telekom asked me twice for the building's floor plan (on 4 and 19 March) and had me fill in a data form. I sent screenshots, a marked map, Cordia's 3D renderings, the link to the official Cordia project page, and finally the floor plan of my own flat. Then in April I was told that Telekom doesn't request or handle such data.
A site visit – as far as I know, not once. This is a 10-storey complex with several hundred flats, already cabled with Telekom fibre, in the same 1097 postcode as Telekom's own headquarters. Yet they ask the resident for floor plans instead of sending a technician who could measure the building in an hour.
Signal boosters. According to Cordia, Yettel and One had already installed boosters in the building. According to Telekom, no other provider has a booster on site. At least one of these statements is wrong.
"Coverage above ground." Telekom provides coverage above ground – my flat is above ground, yet the bedroom doesn't even get EDGE.
Floor plans and data – again and again. Telekom asked me twice for the building's floor plan (on 4 and 19 March) and had me fill in a data form. I sent screenshots, a marked map, Cordia's 3D renderings, the link to the official Cordia project page, and finally the floor plan of my own flat. Then in April I was told that Telekom doesn't request or handle such data.
A site visit – as far as I know, not once. This is a 10-storey complex with several hundred flats, already cabled with Telekom fibre, in the same 1097 postcode as Telekom's own headquarters. Yet they ask the resident for floor plans instead of sending a technician who could measure the building in an hour.
Signal boosters. According to Cordia, Yettel and One had already installed boosters in the building. According to Telekom, no other provider has a booster on site. At least one of these statements is wrong.
"Coverage above ground." Telekom provides coverage above ground – my flat is above ground, yet the bedroom doesn't even get EDGE.
Questions I Think We Deserve an Answer To
- Do you agree that in a complex of 250+ flats, in the middle of District IX, we residents should pay to extend mobile coverage?
- Is it a new policy trend for mobile carriers to sell coverage extension as a paid add-on, and to push the initiative onto the developer or the property management?
- Why should a resident have to send floor plans, screenshots and 3D renderings of a building the provider has already cabled with fibre?
- If a provider builds fibre into every flat, why isn't mobile coverage part of the same planning?
- What are we actually paying for in a mobile subscription if at home we can only make calls over our own Wi-Fi – and when the internet goes down, the phone goes with it?
- Who is responsible: the provider, the developer, the property management – or, in the end, always the resident?
I'm curious about your experience too. If you're in a similar situation, share it in the Szolgáltatói Problémák Facebook group or on the contact page.
How Long Did It Take? – Every Email and Milestone in One Table
The table below shows the full correspondence and the key milestones, with the number of days since the first complaint.
| Day | Date | Direction | Case no. | Content |
|---|---|---|---|---|
| 0 | 2 Mar 2026 – 23:47 | Me → Telekom | – | First complaint: weak 4G/5G in the flats, zero signal in storage areas and the garage; One and Yettel had already installed repeaters. |
| 2 | 4 Mar 2026 – 11:01 | Telekom → Me | 6930121 | They ask for a data form and the floor plan of the address (floor plan request #1). |
| – | Afterwards | Me → Telekom | – | Screenshots, a marked map, Cordia's 3D renderings, a link to the Cordia project page. |
| 10 | 12 Mar 2026 – 13:07 | Telekom → Me | 6937508 | "No central fault" – they recommend VoWiFi and switch it on for my number (VoWiFi recommendation #1). |
| 10 | 12 Mar 2026 – 13:15 | Me → Telekom | 6937508 | What about the garage, storage areas and stairwells? The car alarm and One SIM story. |
| 17 | 19 Mar 2026 – 15:25 | Telekom → Me | 6937910 / 6944003 | They ask again for the floor plan of Vágóhíd utca 9 (floor plan request #2). |
| 23 | 25 Mar 2026 – 00:16 | Me → Telekom | 6944003 | A technical survey isn't the resident's job: I ask them to contact Cordia and send a technician. |
| 24 | 26 Mar 2026 – 09:34 | Me → Telekom | – | My own flat's floor plan, measurements, and a question about how the floor plan is handled as data. |
| 42 | 13 Apr 2026 – 10:53 | Telekom → Me | 6949095 | No other provider has a booster; they ask for the property management's contact; VoWiFi (recommendation #2); they don't handle flat floor plans – deleted. |
| 43 | 14 Apr 2026 – 14:14 | Me → Telekom | 6949095 | I send Cordia's contact details – the day after the request. |
| 45 | 16 Apr 2026 – 11:13 | Telekom → Me | 6961223 | "We'll contact Cordia." |
| – | 16 Apr – 18 Jun | – | – | 63 days of silence. |
| 108 | 18 Jun 2026 – 12:54 | Me → Telekom | 6961223 | When will there be coverage at the address? |
| – | After 18 June | Telekom → Me | 7011891 | They contacted the building in a letter dated 16 April and had no reply. |
| – | – | Telekom | – | Site visit or measurement – as far as I know, never happened. |
| 123 | 3 Jul 2026 | Telekom → property mgmt | – | Offer: paid coverage, underground garage only. |
| 227 | 15 Oct 2026 – 04:00 | – | – | Fibre and mobile outage – the recommended VoWiFi goes down too. |
| 231 | 19 Oct 2026 | – | – | Coverage in the flats, stairwells and storage areas is still unresolved. |
The case in one line of numbers: 7 case numbers, 1 ticket, 4 different agents, 2 floor plan requests, 2 VoWiFi recommendations, as far as I know 0 site visits – and one paid offer for the garage.
The outcome: after more than seven months of emails, the only tangible result was a paid offer for the underground garage. In the flats, Telekom's recommendation is still Wi-Fi calling. What that means when the internet goes down too, I found out during a 4 a.m. outage.