Try taking phone apart again and make sure the components are attached right and clipped down securely. I'd advice to test it before putting it back together
Sent from my Nexus 4 using Tapatalk
Agreed. Sounds like a loose connector to me. I would recommend reseating the connectors (you should feel them gently lock into place). If that still doesn't work, I'd consider evaluating whether the connector is actually damaged or if your screen is DOA.
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