My A1 helps you to manage your mobile and fix services freely, easily and securely using your mobile phone. • The app is brand new - with a new and modern look, improved functionality and new features! • Online payment with debit or credit card directly in the app, ability to save the card for next or automatic payment, as well as the option to choose one or all invoices for payment. • Invoice to e-mail subscription option. • Easy and quick access to the personal offer for your subscription plan with possibility for ordering through the online store. • More information and details about your services. • Activation and management of additional packages. Оther features of the application: Add and manage all your services via My A1 profile using your security code and follow your current bill and the remaining usage for minutes, MB and SMS. Check and download your invoices in PDF. View and add additional packages with TV channels, minutes, MB and SMS that are available for your tariff plan. Activate/deactivate roaming service, check and change your roaming tariff plan and additional package, manage your DRT limit (data roaming traffic). Recharge your A1 prepaid service via your invoice or through the trusted partner page. Search information and find the nearest A1 store. Review the offers in our e-shop and A1 club. Share your feedback about our services, network and customer service Check the network status at your address, district or city My A1 is the first mobile application for telecom services on the Bulgarian market. It is available for A1 customers using postpaid, prepaid or business plan. It supports automatic recognition of the mobile number or you can enter into My A1 profile if you want to manage all your services from a single place. My A1 has two language versions – Bulgarian and English. You can use the app via mobile or Wi-Fi network, both on smartphones and tablets with Android version 5.0 or later. The traffic used by the application is charged as per your tariff plan.
 In case you continue with the installation or update of the application, you agree with the General Terms and Conditions published here.

Make sure that third-party apps are allowed on your device: go to Menu->Settings->Security-> and check "Unknown Sources"

Tap the APK file. Allow the app any required permissions it asks for. Then, at the bottom of the installer window, click INSTALL.

You'll see a confirmation the app is installed. Now you'll see the app available in your list of installed apps.