So in a few weeks i am going travelling round Asia for 2 months and then having a year in Australia, I have an iPhone but i want to get something that will play movies/music but will have a bigger screen that i can watch on long plane/coach journeys and leave my phone battery for pictures/calls etc.

My budget isn't massive at all so just looking for some advice on what might be the best thing to get for my needs?

Also if the memory on these devices were small could i say upload loads of movies/music onto something like Dropbox and when i get to a location that has Wifi swap over movies/music that i have watched for new ones?

Thanks for any info!