on settings - bluetooth, the phone does not discover bluetooth devices. just says 'searching'

Hello there, dave mcr.

The following Knowledge Base article offers some practical steps for troubleshooting issues with Bluetooth connectivity:

iOS: Troubleshooting Bluetooth connections

http://support.apple.com/kb/TS4562

Start with these steps and then proceed with the extended troubleshooting if the issue persists:

Before troubleshooting, you may want to learn more about using Bluetooth with your iOS device.

Begin troubleshooting with these steps first:

1. Check that you are in range of the Bluetooth accessory with which you are trying to pair your iPhone, iPad, or iPod touch. Most Bluetooth accessories have a range of approximately 30 feet.
2. On your iOS device, tap Settings > Bluetooth and find your device in the list. If your device says Not Connected, tap the name of your accessory to attempt to connect it.
3. Tap Settings > Bluetooth and turn Bluetooth off and then on again.
4. Make sure that your Bluetooth accessory is turned on and fully charged or connected to power.
5. Make sure that your Bluetooth accessory is in pairing mode.1
6. Restart your iOS device.
7. Tap Settings > Bluetooth and locate the Bluetooth accessory you are currently connected to or attempting to connect to. Then tap and Forget this Device. Try to pair your Bluetooth accessory again.

   Note: You may need to re-enter your Bluetooth accessory PIN if your accessory requires one. Some common PINs are 0000, 1111, and 1234.

8. Restart your Bluetooth accessory by turning it off and then on again1.
9. Update your device to the latest version of software. See how to update your iPhone, iPad, or iPod touch.
10. If your Bluetooth accessory has upgradable firmware, check to see that you have the latest version1, 2.

Thanks for reaching out to Apple Support Communities.

Cheers,
Pedro.