Moj A1 is a free Android app developed by A1 Srbija d.o.o. that allows A1 mobile network users in Serbia to manage their accounts and access various services in one place. The app provides a comprehensive platform for both prepaid and postpaid users to check their account balance, view usage details, buy add-ons, and pay bills.

The app also offers users access to promotions and discounts, as well as a locator to find the nearest A1 store. Additionally, there is a support section with FAQs and a customer service hotline.

Moj A1 is user-friendly and enables customers to personalize their digital experiences. It requires mobile data or Wi-Fi to display user information, and users can access their accounts via Wi-Fi by using their login credentials. Data usage within the app is not charged when using A1 network, but external content accessed through the app may incur charges according to A1's pricing policy. Roaming data usage is subject to standard roaming charges.

Moj A1 is a convenient tool for A1 mobile network users in Serbia to manage their accounts and access a variety of services in one place.