Why Developer Mode?

Developer Mode allows access to advanced features such as:

• USB Debugging (for Flutter / Android development)

• Viewing logs (Logcat)

• Debugging apps and hardware connections (e.g., Arduino, BLE)

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(1) Samsung Galaxy A15

Steps:

1. Open Settings

2. Scroll down and tap About phone

3. Tap Software information

4. Locate Build number

5. Tap Build number 7 times

6. Enter your phone password/PIN if prompted

7. You will see: “Developer mode has been enabled”

Access Developer Options:

• Go back to Settings

• Scroll to Developer options (usually under “About phone” or “System”)

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(2) Vivo 1907

Steps:

1. Open Settings

2. Scroll and tap System Management (or More settings depending on version)

3. Tap About phone

4. Find Software version / Build number

5. Tap it 7 times

6. Enter password/PIN if required

7. Confirmation message appears

Access Developer Options:

• Go to Settings

• Navigate to System Management → Developer options

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Important Settings to Enable (for Flutter / IoT Work)

After Developer Mode is enabled, turn on:

• USB Debugging

• Install via USB

• Stay awake (optional for testing)

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Notes / Troubleshooting

• If you cannot find Build number, try:

  • Samsung: Software information

  • Vivo: Version / Software version

• Some devices hide Developer Options under:

  • System

  • Additional settings

• If USB debugging is enabled but not detected:

  • Reconnect USB cable

  • Accept “Allow USB debugging” prompt on device