I had used this phone iPhone 5s for two months .but it is too risky to keep more files and data on it because its memory is too short. but we cants to insert memory card other external card. we can’t to transfer files from other mobile phone it may for our phones security but it is too risky. but other phones are more internal space .in iPhone 5 there is short options than in other version. it is my humble suggestion to don’t select iPhone 5s if you wish to use apple. but you can select other versions of phones.