This is the iPhone 5s LCD & Touch Screen Testing Flex Cable. This useful flex cable tester makes it easy to check the functions of an iPhone 5s replacement screen assembly without having to complete the installation and close up the iPhone’s case. It is a necessity for anyone who makes numerous iPhone 5s repairs. With this testing flex cable installed in an iPhone 5s body you can connect, test and quickly swap multiple LCD and touch screen digitizer assembly replacements without damaging the delicate press fit connectors on the logic board.