Currently, Bixby is not supported in Vietnam and most users do not use the Bixby startup button. However, you can easily change this button to open the camera with a simple trick.
This guide applies to Samsung Galaxy S8/S8+ and Samsung Galaxy Note 8.
Step 1: Go to Google Play and download/install the Bixby Button Remapper app.
Step 2: Open the application.

Step 3: In the Status section, default is Disable, select Enable.

Step 4: Choose the default app to open when pressing the Bixby button.

Step 5: Select Camera.

Congratulations! You have successfully turned the Bixby button into a quick camera launch key. To do this, simply press the Bixby button.
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