To confuse the confusion, no computer can "take" any file, apps (or programs) take files. An app that handles RAW format can take a RAW format file. Whether a computer can "take" a file depends on the hardware format - an Apple ][ can't "take" files from Commodore disks - any files. But a plain text file on one disk can be taken by the other computer if you have a program that can read the other computer's disks. The problem doesn't occur in cellphones, except with SD cards, and any cellphone can read another cellphone's FAT32 or exFAT SD card, as long as the card isn't encrypted or otherwise "handled" some way (like making it possible to store apps on it, although that may become standard some day too).