Use [guide|21068|this guide] to remove the screen assembly, clean the connectors on the board using a cotton swab dipped in 90%+ isopropyl alcohol, then gently and properly reseating the connectors.
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Then reboot your phone: press and hold power button + home button for ~12 seconds; restart your phone.
If this solves something, great.
If not (and I believe it won't help much because you seem to have a damaged screen assembly), use that same guide to replace the [product|IF126-000-3|screen assembly] altogether.
Hi,
Use [guide|21068|this guide] to remove the screen assembly, clean the connectors on the board using a cotton swab dipped in 90%+ isopropyl alcohol, then gently and properly reseating the connectors.
If this solves something, great.
If not (and I believe it won't help much because you seem to have a damaged screen assembly), use that same guide to replace the [product|IF126-000-3|screen assembly] altogether.