Auto Bluetooth is an app that can activate the Bluetooth on your Android each time you receive a call, so whenever you pick up you can instantly start using any device that's paired with your phone. When you hang up, the app can deactivate the Bluetooth again, automatically.
In the app's settings, you can also choose to activate the Bluetooth when your device is plugged in and charging, and to deactivate it when it stops charging. Another option lets you keep the Bluetooth on even after a call.
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Auto Bluetooth is a pretty useful app that lets you keep your Bluetooth off until the exact moment you need to use it.
Requirements (Latest version)
- Android 7 or higher required
4 reviews 
Comments
Often fails to turn on, frequently loses connection with the headset after a call ends.