b>DescriptionCompatible with iphone 7 4.7" ONLY,cover: A1660, A1778, A1779. Modelnumber you coulld find on backcover of your phone. Please confirm the model of your phone, before order it!Notice please, when you install the screen, 1. Please test it by inserting the flex to your motherboard before installation, be sure you feel a gentle snap.. 2. Disconnect the battery cable before installation or make sure your phone is powered off. This will protect your phone from incorrect installation damage. 3. Please watch a video tutorial before installation. Be careful and patient can avoid some unnecessary mistakes. 4. There are many screws when you replacing the assembly which are different in size and length. You'd better to mark them otherwise it may broke the screen if you put the screw in wrong place.If you meet some problems like cannot turn on,touch insensitive, flash, lines on screen etc, please follow below steps: 1.Please check the LCD to make sure the flex cables are in good condition and there are no debris on the connector. 2.Disconnect and reconnect the flex cables from the motherboard side. 3.Then Reboot: Hold buttons (Home, Up volume, and Power button) untill the phone switch down and then switch up again. 4.Make sure IOS has been upgraded to the latest version. 6.If any problem could not be resolved, please contact us. We have professional customer service team to support you!