Notice before installation (professional technician is needed for installation), we strongly recommend testing the item received before installation, please do not remove the protective film or labels when you do the test; the steps of the test are: clean the flexible cable of the screen and the groove of the motherboard before testing, connect the new screen to the motherboard, make sure that the battery was charged completely and make sure that the motherboard is not broken. Power on, tested and finished; if the test is okay, please install it carefully, if it cannot work, please contact us for the first time, and pls do not force you to install it on mobile phone, we cannot be responsible for the damage due to improper installation, the return may waste time, pls confirm your model and item type which is looking for, thank you for your attention!