You can transfer memory cards from your pc. The memory cards on the phone are located in a folder named .psx4droid. They are in .mcr format. If you copy your memory cards from the pc and rename them to what they names of the memory cards are on the phone it'll work. Tried it myself last night. Save states are specific to the emulator so they will not work.
im having a lot of trouble getting this to work for me. i have tried to rename them and put them where i think they should go but my saved file doesnt show up. i have been playing FFVII on my droid x for 5 hours, saved the game in slot 1. found the file in my .psx4droid folder and renamed it to what im finding in the epsx memory card folder which is "mcd001.mcr" but it wont show up. i would love to play on my laptop, then carry on from my last save on my phone when im on the go. can you help me out? thanks!