Ethereum

ethereum on smartphone

https://ethereum.stackexchange.com/questions/18461/how-can-dapps-work-on-smartphones

Ethereum stable tokens

DGX or Gold StabL Tokens

https://makerdao.com/

ethereum stable fiat tokens

http://www.verdict.co.uk/electronic-payments-international/news/company-news/tether-introduces-fiat-tokens-bitcoin-ethereum-blockchains/