Expandable Memory for Apple Iphone
Apple is aware that many customers are in need of more memory space than what is available directly on their iPhones.
And, though the company is tight-lipped about work they are doing on upcoming versions of the product, it is possible that they may incorporate a slot for removable storage media on a future iPhone model.
But for now, Apple has offered another solution to the issue. It is calledMobileMe.
MobileMe can store content (music, pictures, or videos, for example) in the online cloud. You can upload to MobileMe from an iPhone and then syncMobileMe to a computer.
The content stored in the cloud can be accessed from either an iPhone or a computer.
TheMobileMe service is not free, though. It costs $99 per year to have 20G of storage space and the use of 200G of bandwidth per month.
If this is not enough space, it is possible to add on an extra 20G of storage space for another $49 per year.
WhileMobileMe may be a bit costly, it may be worthwhile to many iPhone users.
Other people may choose to wait for the next iPhone model to be released in the hopes that it will offer better memory space options
Sources : http://www.scribd.com/doc/19486734/Expandable-Memory-for-iPhone