well, if you know japanese good enough, then all good jrpg
if not, then not much really
for example english translated games: Perosna 3 as mentioned above, Growlanser 4, Fate/Extra
maybe something else, i cannot remember
I cannot imagine play vn on some small screen. PC is better, besides some VNs can have really good cg, its just waste of pleasure to play on smaprtphone. Well, its conveniently of course but useless anyway