Handoff doesn't work between iPhone and iPad

Hi. I had same problem between iPhone 5, iPad Air and MBA Early 2014.

Try this out, if worked for me:

- Add your iCloud email address to your own contact card.

- Wait to sync the contacts in all your devices.

- Switch on the Airdrop for only contacts.

- Find yourself in your other devices via Airdrop trying to send a photo (for example). Don't send it, just find yourself.

- When you get it, start using email, callings,... it will work hopefully.

All these steps are needed to be done just for the first time.

I worked before upgrading the Yosemite. By then, I enable the 'Airdrop to Everyone'. I works again.