Poor Mobile Network Coverage on Turkcell Across Multiple Cities

About two months ago, I switched my mobile line to Turkcell, and since that day I have been experiencing constant signal issues and interruptions.
I currently live in Adana, work in Yenice (Mersin), and I am presently in my hometown of Ağrı. In all three of these locations, my line does not provide reliable coverage—my calls drop, my internet connection frequently disconnects, and I am unable to use the service efficiently.
I have reported this issue to customer service multiple times. Standard troubleshooting steps such as restarting the phone and sending line updates were performed. I was also told that there is no base station issue in my area.
However, despite following all these instructions, there has been absolutely no improvement, and the problem continues unchanged.
Due to the widespread coverage issues I have experienced since switching to Turkcell, I am considering moving to another operator.
If I decide to port my number, I request that my subscription be terminated without any early termination fee, given the ongoing service issues.
I ask that my complaint regarding the line ending in 9429 be reviewed, that my inconvenience be resolved, and that any termination fee be waived.
Dear Customer, We will investigate your request and provide you with information as soon as possible. Sincerely, Turkcell
Dear Customer, We called you from line number regarding your request but could not reach you. We will call you again from this number. Regards, Turkcell
Dear Customer, We have forwarded your request to the appropriate channel for evaluation. We would like to inform you that you will be notified once the review is completed, and we kindly ask you to wait a little longer. For any issues where you need support regarding our products and services, you can visit the "Help" page in our Turkcell app. Sincerely, Turkcell

You keep sending messages saying that our investigation is ongoing at specific times every day. For two days now, you have also called verbally saying that the investigation is ongoing. What kind of investigation is being conducted? I request that the issue be resolved.

After porting my line to Turkcell two months ago, I have been experiencing constant signal loss and internet outages in the Adana, Mersin Yenice, and Ağrı regions. The interruptions in voice and data services have not been resolved despite repeatedly contacting customer service, receiving only a standard response that 'our investigation is ongoing.' This situation creates serious dissatisfaction with the service quality and supports my request to terminate my current contract without paying the early termination fee.

I was called on line number 532 at 15:50 on 30.03.2026. Customer advisor Ms. Gül confirmed that there is a lack of a base station in the area where my problem was verified, and stated that the problem will not be solved for now and that there is no date for a solution. It is obvious that a station in a region still in the investment plan will not be installed and commissioned quickly enough to resolve the problem. As I also conveyed to Ms. Gül over the phone, and as I write here, I reiterated my request that, since this problem is entirely caused by Turkcell, my line be cancelled without paying the termination fee, and she noted that this was recorded. I kindly request that the necessary procedures be carried out to provide me with written confirmation of this before I transfer my line to another operator.

Ms. Gül from the 532 line contacted me again on 31.03.2026 at 11:56. They told me that the problem is not caused by them, so they will not respond positively to my request. When I asked, "How can a region you mentioned in our investment plan, supposedly due to your base station, not be a problem caused by you?", I was told to explain my issue to the BTK. There are two questions here: 1. What does it mean that, despite the problem clearly being caused by them, they portray it as if it were the fault of our State Authority? 2. If the problem is BTK's fault, does the fact that Vodafone and Türk Telekom lines are operating in the area mean that BTK is showing a negative attitude toward Turkcell compared to them? 3. Shouldn't the advertisement change from "Connect to Turkcell live" to "Connect to BTK live" if the problem is being blamed on the BTK?
Dear Customer, Your request has been reviewed and you were informed about the matter on 31.03.2026. You can use the Turkcell app for any needs regarding our products and services. Sincerely, Turkcell

I have escalated my complaint to the Information and Communications Technology Authority. My complaint is ongoing.














