Q: My iPhone 5 screen turned black after ios8 update

Hello JethrofromBama,

Thanks for using Apple Support Communities.

From your post I understand that your iPhone's screen has no backlight, and is dark.  I'd like you to please follow the steps below in attempt to resolve this issue.

 

Display has no backlight or dark screen

1. Toggle the ringer switch to see if the unit vibrates. If it does, it could be that iPhone is getting power, but is not displaying any image.
2. Try turning iPhone off and then on again.
3. While connected to the iPhone charger, try to reset the iPhone.
4. If the low-battery screen appears, charge the iPhone.
   

 

My issue is still not resolved. What do I do next?

Contact Apple Support.

iPhone: Hardware troubleshooting

Take care,

Alex H.