I have an iphone 6s 16gb and shoot 4k and take a lot of photos so it's constantly full. I usually use cloud backup when I have wifi, but I may not have that option when I'm away on this trip. I also have an iphone 5 64gb which is now collecting dust. Could I airdrop my photos and 4k videos across to the iphone 5 to store them without losing quality? Any help or tips would be appreciated.