Can you use airdrop on the iPhone 4S?

Can you use airdrop on the iPhone 4S?

As long as you have ios 7 installed in it then yes you can. Any older version of ios won't let you be able to use air drop

Airdrop needs the hardware for it, so I think only 5 / 5C / 5S

No. Only iPhone 5 users can use Airdrop.

No. Only on

iPhone 5 & up
iPod touch 5G
iPad mini
iPad 4

Well, after OS7 was added to my iPhone 4s, airdrop worked, but with subsequent "updates", airdrop was somehow removed from my iPhone 4s. Why is Apple obscuring its actions?