I replaced a cracked screen on an iPhone 6. Changed the home button from the old screen to the new. Double checked all my connections with a dual lens magnifier for proper connection. Reassembled everything……… BUT now when I turn it back on to reboot all I get on the screen is the apple icon with a white background………. HELP???? It will flash on and off every few seconds with the same apple icon in the middle of the screen with a white background and won’t fully reboot. What am I missing? is the new screen kit bad? Should I swap the back metal shield with touch ID cable? I’ve fixed more i5’s then I can count but this is my first i6 fix…….………..