Used for Over-The-Air (OTA) installations via the mobile web browser. The Standard Side-Loading Workflow

Before exploring the app ecosystem, it's important to understand what BlackBerry OS 7.1 brought to the table. The update introduced several notable features:

You aren’t using a BBOS 7.1 phone to replace an iPhone. You are using it as a focused communication tool —and the right apps make that possible.

For those who lived through the BlackBerry era, the apps of OS 7.1 evoke a specific kind of nostalgia—a time when smartphones were primarily about staying connected and getting work done, without the constant distractions of modern app ecosystems. The physical keyboard clicking beneath your fingers, the red LED pulsing to announce a new BBM message, the satisfying trackpad navigation between icons... these sensations remain unmatched.

The core phone functionalities remain operational on compatible network bands. How to Install Apps on BlackBerry OS 7.1