My A1 application allows you, as a user of the A1 mobile network in Serbia, to finish everything in one place, whenever it suits you. Welcome to a world that inspires 25 million people in 7 countries and that encourages you to create your own digital experience. POSTPAID In the My A1 application as a postpaid user of the A1 mobile network you can: - at any time to check the current balance of your account, as well as accounts in the previous 12 months - see the consumption of minutes, gigabyte