GA Mobile is a free security app developed by Oi Aplicativos for Android devices. It falls under the Business & Productivity category and aims to protect and ease the lives of Oi employees and third-party individuals. The app allows users to change and unblock their password or release VPN with ease.

The app's main feature is security, which is evident from its name. It provides a safe environment for users to conduct their work and personal activities without fear of data breaches or cyber attacks. The app's interface is user-friendly, and it is easy to navigate around. The app is also free to download and use, which is a plus for users who do not want to spend money on security apps.

Overall, GA Mobile is an excellent app for Oi employees and third-party individuals who want to ensure their safety and security while using their Android devices. It is easy to use, free, and provides a safe environment for users to conduct their activities.