Activity Reader is off by default. Open the Notifications panel or go to Settings to turn this feature on and choose the types of voice notifications you want to hear.
Connect your wired or
Bluetooth headset to your phone and put it on.
Depending on the type of headset, you'll see or displayed in the status bar.
Do any of the following:
On/Off switch to turn it on.
Tap the respective
switches of the voice notifications that you want to enable.