5G broadband growth meets rising currency risk
- Turkcell's core engine is Turkey telecom, which produced about 91% of 2025 external revenue.
- The new 5G network is driving strong fixed wireless access adoption, capturing 74% market share.
- The Google Cloud partnership includes a hyperscale data center currently under construction in Ankara.
- The big near-term worry is a $1.2 billion short U.S. dollar position during a weaker Turkish macro setup.
Strong customers, risky funding
Turkcell is doing a lot right in its main business. It pushed more customers into postpaid plans, which tend to be stickier and higher value than prepaid plans. The company added 2.4 million postpaid mobile users in 2025, the strongest yearly result in 26 years, and has continued that momentum into 2026. Real ARPU, meaning average revenue per user after inflation, has continued to grow.
The next growth leg is infrastructure. Turkcell launched 5G nationwide on March 31, 2026. This launch immediately boosted the fixed wireless access product, Superbox, which now holds a 74% market share. The company is also building a hyperscale cloud region in Ankara through a Google Cloud partnership. If companies need local cloud, data storage, AI, and cyber security, Turkcell can sell more than phone plans.
The bear case is not about demand. It is about cost and balance sheet risk. Management guided 2026 EBITDA margins lower because wages rose above inflation and 5G needs heavy launch marketing. More importantly, the company has built a $1.2 billion short U.S. dollar position to earn high Turkish lira yields. That trade can add income when the lira is stable, but it introduces massive currency risk if the lira breaks.
Bills, bundles, towers, cloud
Turkcell makes most of its money by selling mobile and fixed communication services in Turkey. Customers pay for voice, data, broadband, IPTV, and related digital services. The best customers are postpaid mobile users and fiber users because they usually pay more and churn less.
Pricing is central to the model. Turkey has had very high inflation, so Turkcell raises prices often and uses customer data to make targeted offers. This has helped it keep real ARPU growth positive, but it also tests how much customers can take before they trade down or leave. The company introduced non-commitment contracts for broadband in late 2025 to adapt to changing wholesale costs quickly.
The company also earns from digital business services, data center and cloud, payments, consumer finance, and tower leases to rivals. These areas add growth options, but some require large upfront spending. 5G spectrum, fiber, cloud regions, and data centers all need capital before the full revenue shows up.
What Turkcell sells
Mobile service
This is the heart of the business. Turkcell sells nationwide postpaid and prepaid mobile plans on its new 5G network.
Fixed broadband and IPTV
Turkcell sells fiber, resold fixed broadband, and IPTV. Its own fiber base reached about 2.6 million customers at the end of 2025.
Fixed Wireless Access (Superbox)
Powered by the new 5G network, this home internet offering has captured 74% of the fixed wireless access market.
Digital services
Consumer apps include TV+, fizy, lifebox, BiP, and GAME+. These help bundle more value into telecom plans and keep users inside the Turkcell ecosystem.
Data center and cloud
Turkcell runs 32 data centers and is building a dedicated Google Cloud region in Ankara. The cloud region is expected to become operational around 2028 to 2029.
Techfin
Paycell handles payments and Financell provides consumer financing. Techfin is smaller than telecom, but it grew faster than the core in 2025.
Tower infrastructure
Turkcell owns tower assets and leases capacity to other operators. This turns parts of the network into a rental business.
Mostly Turkey telecom
Segment mix is based on 2025 external customer revenue from the 2025 Form 20-F. Turkcell Turkey dominates the mix, so results still depend heavily on Turkish consumers, companies, inflation, and the lira.
What could go wrong
Lira shock hits the short dollar bet
High impact · Medium oddsTurkcell held a $1.2 billion short U.S. dollar position as of mid-2026 to benefit from high Turkish lira yields. That trade can add income when the lira is stable. It can also create massive losses if the lira drops quickly, especially after geopolitical shocks hurt emerging market risk appetite.
5G costs arrive before 5G revenue
High impact · High oddsTurkcell launched 5G nationwide on March 31, 2026. The service is driving fixed wireless adoption, but the early phase brings heavy marketing, sales, and network costs. Management guided 2026 EBITDA margins down compared to 2025 to account for these expenses.
Price hikes push customers away
Medium impact · Medium oddsTurkcell has used frequent price increases to keep ARPU ahead of inflation. That has worked so far, but Turkish households still face pressure from high prices and high interest rates. If users trade down or leave, the postpaid win streak could fade.
Cloud buildout takes longer than planned
Medium impact · Medium oddsThe Google Cloud partnership is a major long-term growth plan, with construction currently underway in Ankara. Turkcell says the region is expected around 2028 to 2029. Delays, cost overruns, or weak corporate IT demand would lower the payoff.
More competition or regulation
Medium impact · Medium oddsTurkey already has intense local telecom competition, with Turk Telekom and Vodafone as major rivals. Rumors around Turksat entering as a fourth mobile operator could create headline risk even if management doubts near-term feasibility. Telecom taxes and fees are also heavy.
Sources and research notes
This page combines Finn's company research with public filings and other cited materials. The thesis is reviewed when material company information changes; Finn Scores use the latest available scoring data.
- Thesis reviewed
- August 23, 2026
- Score data
- September 27, 2026
- Reviewed by
- Shivam Bharuka
Comparable Telecom Services companies
Companies near Turkcell Iletisim Hizmetleri A.S. in Finn's Telecom Services industry ranking.
