Android supports OOB via NFC, but only as a special case. You should just be able to call `createBondOutOfBand()` but the method is hidden:

https://android.googlesource.com/platform/frameworks/base.gi...

I'm pretty sure iOS doesn't support pairing via NFC.

https://www.linkedin.com/pulse/nfc-speakers-from-apple-you-c...

http://www.informationweek.com/mobile/mobile-business/iphone...

So, no, they don't support OOB (except in one limited case on Android).