Developer Mode unlocks USB debugging, a hidden Android setting that lets a computer communicate directly with the device via ADB (Android Debug Bridge). This is a required first step for setting up OnSign, since ADB is needed to sideload the OnSign player and SPM (Signage Platform Module) and to configure OnSign as Device Owner, both of which are required for kiosk mode functionality. This article walks through the steps to enable Developer Mode on your Android device.
Note: The screenshots and menu names in this guide were captured on a Samsung Galaxy Tab A11. Menu names may vary slightly depending on the device model and Android version.
Step 1 — Enable Developer Options
- Open Settings.
- Scroll to the bottom and tap About Tablet (or About Phone, depending on the model).

- Tap Software Information.

- Locate Build Number.
- Tap Build Number seven times.

- After several taps, Android will display a message such as:
"You are X steps away from becoming a developer."
- After the seventh tap, allow Developer Mode.

Step 2 — Enable USB Debugging
- Return to the main Settings screen.
- Scroll to the bottom and open Developer Options.

- Now at the Debugging section you can enable different debugging methods such as USB, Wi-fi and Wireless Debugging.

- Let's enable USB debugging for example. When prompted, tap OK to confirm.

The device is now fully configured and ready for OnSign installation and ADB communication.