Do not claim that vanilla is the only coin that can be compiled on other devices like phones.
I myself have compiled more than one coin to my nas and android phone.
Of course it was a headless client but it could share the wallet.dat with my desktop and do everything it's supposed to, including PoS.
well..do you have any POS coin that could do staking on cell/mobile phones?
an android phone is just a linux computer.
you can compile any coin that you can compile on, for example, an ubuntu pc and have all the features.
provided you have enough storage space for the blockchain, that is.