Bluetooth pairing and so handoff does not work

After calling AppleCare for about an hour is resolved the Handoff-Problem but that does not work for Instant Hotspot too.

The way we tried to solve ist:

- Deactivate all Network - Router (taking off power)

- Reactivate the router

- deactivate WLAN on rMBP

- shut down rMBP
- press: shift + ctrl + alt + power until rMBP shows up the login screen (safe os mode)

- shut down rMBP again

- power on rMBP and press: alt + cmd + r + p until you can hear the boot sound

- now login into your rMBP

- open finder and goto "Macintosh HD" -> library -> Preferences

- delete com.apple.Bluetooth.......

- open Settings -> iCloud ... sign off from iCloud and than sign in again

now in bluetooth settings iPhone should not be displayed, it currently will be connected through Bluetooth 4.0 LE without showing up in Bluetooth settings

Be sure of:

- being on the same WI-FI network (rMBP and iPhone)

- rMBP handoff ist activated in "Settings -> General" -> there ist a handoff option

- iPhone's handoff ist activated too "Settings -> General -> Handoff & ..."

Please tell me, if that two special booting "things" will help to solve your problems with handoff too!?!

by the way, AirDrop must NOT me activated ;-)

next thing, i want to find out is, why instant hotspot does not work ..... but that is not a huge problem, because i can simply turn on the personal hotspot on my iPhone.

yes, there is an additional troubleshooting for your iPhone.

- be sure that you have still OS X Yosemite and iOS 8.0.2 or later (8.1 on Monday) installed on your devices

- on iOS goto settings -> generall -> scroll down to reset settings (last option on general screen) -> reset all network settings

- be sure to reconnect to the same WI-FI after you did that

- be sure to activate Bluetooth

- be sure that Handoff ist activated on your iPhone (Settings -> General -> Handoff)

- be sure your MBP ist on the same WI-FI (same bandwith as well, for example both devices have to be on 2,4 GHz)

if that troubleshooting does not work for you, goto settings -> iCloud -> scroll down to logout from your iCloud on iOS

and than reconnect to iCloud on your iPhone 5c

if that troubleshooting does not work too, goto settings -> general -> scroll down to reset settings

and reset all settings, do the same as before

you can also check on your MBP:

- goto Macintosh HD/library/Preferences/By Host and check for files com.apple.Bluetooth......

- delete them

- do not forget to activate Bluetooth on MBP

if you did the two boot-tricks in the troubleshooting, Bluetooth should be reseted to default, and if you open Settings -> Bluetooth on your MBP

your iPhone should NOT be shown in the list of available Bluetooth devices.

please tell me, what works for you!

;-)