hi! u can use max. 128 mb

Thanks but i meant make i want one thats compatible with my phone cheers :)

Eh, hello! Any memory stick duo upto 128mb is compatible, anything bigger won't work and it don't matter who makes it, it will work.

just to let u know im usin the sony duo stick 1GB ok on mine

Im using a 2gig in mine

You are talking ! The P900 cannot take anything bigger than 128mb, even confirmed in the product spec. When I got mines I bought a 512mb memory stick duo for it, but it never worked and none of my other memory sticks work in it to this day, but my P910 accepts bigger

And here is the text from the Sony Ericsson Web site Maximum capacity of the Memory Stick Duo used with the phone can be 128MByte.

@ s*cker YES u can use bigger memory sticks in a p900 if u flash the furmware 2 a p910's im using a 1gig ms in my p900

anything higher than 128mb is pro duo and they don't work in p900s

no actually i work in a cell shop we sell up to 2gig duo cards, im gonna try the firmware upgrade to p910 thx 4 the idea :D