Chosen Solution
I recently taught my self to fix my old Iphone 5 screen to sell it for more money. After replacing the old screen with a new one, I noticed everything turned on and responded well until I went to put my pin in to unlock my phone. All numbers work besides the top row(1,2,3).
Try to remove and reconnect the lcd and digitizer cable sometimes is not properly connected. If it still does not work send’it back to your vendor and ask him to send another one.
