Turkcell Iletisim Hizmetleri AS
turkcell.com.tr ↗In their words
“While monthly churn improved to 1.1%.”
“As a result, our churn improved year-on-year to 2.7%.”
“Our churn rate declined by 0.6 percentage points year-on-year to 1.6% in the second quarter”
NPS disclosures (2)
With the rollout of 5G, we achieved significant improvements in customer experience. Our Net Promoter Scores (NPS) increased across all measured areas, including network coverage, internet speed, connection stability and 5G awareness. These results have been one of the strongest indicators of the value created by our network investments for our customers.
Turkcell's Net Promoter Scores increased across network coverage, internet speed, connection stability, and 5G awareness.
Retention over time
Retention figures Turkcell Iletisim Hizmetleri AS has published, by date. Where several business units report, the one reported most often is shown.
Churn (per period, as reported)
Retention disclosures (6)
Churn (Mobile): 1.6% (Q2 2026 (monthly)) — “Our churn rate declined by 0.6 percentage points year-on-year to 1.6% in the second quarter”
Churn (residential fiber): 1.1% (Q2 2026) — “While monthly churn improved to 1.1%.”
Churn (Turkcell Türkiye mobile): 2% (FY2024) — “the annual churn rate remained stable at 2% throughout the year thanks to our successful subscriber retention strategy”
Churn (mobile): 2.7% (Q4 2025) — “As a result, our churn improved year-on-year to 2.7%.”
Churn (Fixed): 2% (Q3 2025) — “Fixed Churn (%) 2.0 %”
Churn (Mobile): 2.6% (Q3 2025) — “our mobile churn rate stood at 2.6%”
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About these figures
Every figure here was publicly disclosed by the named company: press releases, annual reports, SEC filings, earnings calls and news coverage. Companies tend to publish their NPS when it is good, so these numbers run higher than a true industry average: read them as what leading companies in this vertical say publicly, not as an industry benchmark.
NPS runs from −100 to +100. Retention figures are reported as the company defines them (net revenue retention, gross revenue retention, customer retention rate, churn). Every entry links to its source in the full database.