Blau Turkey Roaming 2026: Check costs or use a travel eSIM
Blau Turkey Roaming: check the terms first, then turn on mobile data
Short answer: Turkey is not included in standard EU roaming with Blau. For data usage in Turkey, Blau currently offers bookable foreign travel packs, including 2 GB for 14.99 euros per month, with a temporary offer of 4 GB instead of 2 GB until 09/30/2026. If you prefer to plan your travel data separately from your Blau contract, you can use a Turkey eSIM as a separate data line.
With Blau, the most important point is not whether your phone works abroad in general. The question is which world zone applies and which data package is actually active. In Turkey, you don't want to be looking for this answer when you need to pull up your hotel address during the transfer and the Wi-Fi is still far away.
Secure Turkey data before your trip: With a VoiSim Turkey eSIM, you use a separate data package for mobile data and keep your Blau SIM in your device.
What Blau says about Turkey
On the Blau international website, Turkey is listed as a country in World Zones 3 and 4. For these zones, Blau does not describe mobile data usage as a standard domestic rate, but rather through currently offered packs that can be booked after entering the respective country. Mentioned are 50 MB for 4.99 euros for 24 hours and 2 GB for 14.99 euros for one month. The roaming page for Turkey also states: bookable 2 GB for 14.99 euros for one month.
In addition, Blau occasionally promotes "Roaming Plus World" with 4 GB instead of 2 GB for 14.99 euros per month until 09/30/2026. Such promotions can change. That is why checking "Mein Blau" or the current Blau website is part of travel preparation.
Who is a Blau foreign travel pack enough for?
A Blau pack works if you are a Blau customer, can easily find the option in your account, and your data needs fit within the package. For messengers, maps, quick searches, and travel apps, 2 GB can be enough with economical usage. If you watch videos, use a hotspot, or upload a lot of social media, the volume will be gone faster.
| Situation | What to check? | Risk |
|---|---|---|
| One week hotel vacation | Is the pack enough for maps, messengers, and excursions? | Video usage eats up data |
| Road trip or rental car | Plan for navigation and traffic data | Without data, the route becomes annoying |
| Family vacation | Plan multiple devices separately | Hotspots quickly empty small packages |
When a Turkey eSIM is a better fit
A travel eSIM is not a change of provider. It is an additional data plan for your smartphone. Your Blau SIM stays in the device, your number remains reachable as long as your main plan has network coverage in the travel destination. For mobile data, you select the Turkey eSIM as your data line.
The advantage is the separation: everyday plan stays everyday plan, travel stays travel. You don't have to wait to see which SMS arrives after you enter the country, and you can prepare your data package in peace before departure. This is more convenient, especially upon arrival, during transfers, and for your first outings.
Important local settings
Name the new eSIM clearly, for example, "Turkey Data". Set mobile data to this line. Only activate data roaming where necessary for the travel eSIM. Disable automatic app updates over mobile data and save your hotel address, flight number, and transfer contact offline.
If you want to stay with Blau and only supplement your travel data, this separation is the cleanest way. You continue to use your familiar smartphone, but without tying the Turkey data question to your main German tariff.
Conclusion
Blau offers its own roaming packs for Turkey, but Turkey is not EU roaming like Spain or Italy. If you prefer booking via your Blau account, check there for the suitable pack. If you want a separate, pre-plannable data package, get a Turkey eSIM as a supplement.
Do it before departure: Choose a package, install the eSIM, and use it as your data line in Turkey.
Status: September 2026. Blau terms and promotional periods may change. Check the current information at Blau and the instructions from your eSIM provider before booking.