I am aware of USB drive, but that doesnt seem to work for me, keeps crashing and it hasnt been updated in a long time. Are there any alternatives which are compatible with mac and pc? And of course this is without the need for 3rd party software. iTunes offers file sharing now, but not every computer - especially at work - has itunes, so if there is a simple app that can turn my iphone into a USB drive please let me know!