AY YILDIZ is a lifestyle app designed by Telefonica Germany GmbH & Co. OHG for iPhone users. Whether you have a prepaid or contract plan, this app provides a convenient way to manage your tariff and options effectively.

For prepaid customers, the app allows you to easily book, switch, or cancel options, check available data volume, inquire about your balance, recharge via credit card or bank account, and update contact information.

Customers with contract plans can view contract details, tariff specifics, and booked options, check available data volume, view and download invoices, and update contact details.

Install the latest AY YILDIZ app now to benefit from continuous optimizations and enhancements. The app invites user feedback and new ideas for further improvements. Enjoy the app experience!