Handoff on macbook pro retina

Question

hey guys I've just upgraded to yosemite and I've done everything you could possibly think of to make handoff work
bluetooth on across all of my devices (including my macbook pro retina)
same wifi network for all devices
signed into the same icloud account for all devices
all devices (iphone 5, imac, macbook pro retina) are eligible for handoff, instant hotspot and low energy bluetooth
but the handoff tab doesn't show at the left side of the dock and neither does the instant hotspot sign shows in the list of wifi networks
what should I do, this is really driving me crazy

Answer 1

First, verify that the Mac is capable of using Handoff. Hold down the option key and select System Information... from the Apple menu. In the System Information window, select Bluetooth from the list on the left. Near the top of the summary of "Hardware, Features, and Settings," you should see this line:
          Handoff Supported: Yes
Follow the instructions in this support article. All the devices using Handoff must be connected to the same Wi-Fi network. If the Mac also has an Ethernet connection, disconnect the Ethernet cable.
If Handoff still doesn't work, on the mobile device, turn Handoff off and back on as directed in the linked article. On the Mac, turn Bluetooth off and back on. You might have to restart a mobile device to get it working.