On Android devices, it may vary how Bluetooth can be turned on.
Method 1
Step 1: Slide down top menu
Step 2: Tap on the Bluetooth icon
Step 3: Your Bluetooth now has been turned on
Method 2
Step 1: Go to settings
Step 2: Go to Connections / Bluetooth
Step 3: Turn Bluetooth on
Step 4: Your Bluetooth now has been turned on