Well, if you can show me a Hive node, even a witness node, running and working on a smartphone I will give you a bounty!

Hah just messing with you. This is related to the blockchain code specifically. The blockchain can be accessed from any device, smartphone/laptop/television, basically anything with internet and a browser really.

So if this feature were added, you could theoretically send a transfer via your smartphone from Hive to Ethereum and back.