In the American store, you are completely unable to use it on Vita. It is 100% impossible. You cannot transfer via MediaGo, you cannot download it on Vita, and you cannot transfer it via PS3. It is absolutely not possible at this time. I have already sent a request to Sega to bring compatibility, and I have yet to hear a response.
It took a couple weeks but sega finally replied to me and said this:
"we can not comment on anything that has not been announced"
But anyway, Keep mailing / submitting tickets to Sega , and we might just see phantasy star portable 2 on our Vitas !
It was probably removed due to people using it as an exploit for the VITA, as they were doing with other games:
Also, Phantasy Star Online 2 was already confirmed to be completely free to play, and free to download. There will be a micro transaction system in place but it seems that it's a minor thing for cosmetic upgrades and such.
I know this is about Portable 2 but some people were saying PSO2 was pay to play, I wanted to clear that up so word doesn't start going around that it's a pay to play model. As far as PSP to PS VITA support... I wouldn't get your hopes up guys if it isn't on the store already - we all have seen Sony drop the ball with digital copies of games for the PSP. They should have made it mandatory in the first place for developers to have physical AND digital copies of every game, to future proof their PSP roster.
Sony claims it is up to sega to release psp2.
Well anyway Sega contacted me again after me emailing them a lot and said this:
"Hi, Thanks for the feedback. We will take it into consideration for future releases and updates. Best Regards, SEGA Customer Support"
So I guess all we can do is keep contacting Sega and maybe one day soon we may get lucky and own psp2 on Vita !
omg I just updated my vita today , and sega added freakin sonic rivals 1 and 2 to the psp game list, but still no phantasy star portable 2 ! ARGH !!
I never imagined vita to be released and finding myself playing psp while my vita collects dust...