Airdrop isn’t working!

Everything seems fine about this OS X but here unfortunately the airdrop between my iphone and my mac is not working. It is working just fine over yosemite! Not good apple. Why do you guys always have do something wrong?! why can’t it me like OS X lion or mavericks where everything worksed fine. THose are what that could be said a perfect os x

JIS 3110 about OS X El Capitan