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my phone was working fine just a cracked screen, so i tried to replace it, i followed all the stems excatly and my screen wont turn on. i kow the logic board an the back of the phone is still working because when spamming the on button i accidentally called the police with no idea i was doing so. what can i do?

Re-seat the connectors and while you’re at it, inspect them for any damage or creases. Did you make sure to disconnect the battery for the repair? And where did you source the screen from?