Yettel BG is a free iPhone app developed by Yettel Bulgaria EAD. It allows users to manage their subscriptions and services with ease. With this app, users can keep track of their current bill or credit and monitor their usage. They can choose which aspect of their usage to focus on and customize their home screen accordingly.

The app also provides features for checking invoice details and viewing invoice history for up to six months. Users can conveniently pay their bills online, saving their bank card information for future or automatic payments. Partial payments are also supported.

Depending on the authorization level, users can access information and manage services for their postpaid numbers. The app allows users to top-up prepaid numbers using vouchers, bank cards, or funds from their account.

Additional features include the ability to activate and deactivate additional MB packages and minutes, access information about monthly subscription plans, customer numbers, invoice dates, and contract terms.

Yettel BG provides comprehensive information about all smartphone devices and services used by the user. The app supports both Bulgarian and English languages.

Overall, Yettel BG is a user-friendly app that provides easy management of subscriptions and services for Yettel Bulgaria EAD clients. It is available for free and can be used over mobile networks or Wi-Fi.