Q: Personal Hotspot in Yosemite only shows up after unlocking iPhone

Hi tOMPSON,

If your Personal Hotspot becomes unavailable when the iPhone goes to sleep, you may want to try some things to troubleshoot.

First, quit all running applications and test again -

iOS: Force an app to close

Next, I would try restarting the iPhone -

Turn your iOS device off and on (restart) and reset

Next I would suggest resetting your iPhone's network settings. Follow the directions in this article -

iOS: Troubleshooting Bluetooth connections

Specifically -

 

• Reset network settings by tapping Settings > General > Reset > Reset Network Settings.
  • This will reset all network settings including: previously connected Wi-Fi networks and passwords, recently used Bluetooth accessories, VPN, and APN settings.

If the issue is still present, you may want to restore the iPhone as a new device -

iOS: How to back up your data and set up your device as a new device

Thanks for using Apple Support Communities.

Best,

Brett L