If you're still confused, here is some more info:
All Android smartphones have BT support
It's found under Settings on the Android
If it's turned off, just tap ON
Now you need to Pair the OBi202 with the Android
On the OBi202 phone, dial *28
This will make the OBi202 discoverable
On the Android under Settings tap Bluetooth then tap Search For Devices
You should see the OBi
Tap the OBi to pair the 2 devices
Now the OBi should be listed under Paired Devices and say Connected
This procedure might vary slightly for different versions of Android
To make a BT call on the OBi202, dial **8 followed by the phone number
Edit
If you don't see any devices after you Search For Devices, you took too long between dialing *28 and searching
Dial *28 again