I have a retina macbook pro late 2013 and an iphone 5s. I have tried to test the handoff feature by writing an email in the OSX mail client and then continue working on it on my 5s. At first everything seems to work fine. The mail icon appears my iphone homescreen and it asks me to verify with touch id. Then the email client open and it's starts loading...and that's it. The email never stops loading and eventually it times out. I have tried to reverse the process...going from phone to macbook and it seems to work, but it is horribly slow. I have also noticed that using a magic mouse (via bluetooth) and using the handoff feature completely disables wifi on my macbook. The wifi symbol is on, but websites doesn't load until i disable wifi myself. Any advice on how to fix this? Any one who experience the same?