Q: my iphone 6s is stuck on a black screen displaying the itunes symbol and a charging cable. I tried connecting it to itunes and it won't recognize it or anything.  Please help!

Hello Nelly,

I understand that you are having an issue with updating and restoring your iPhone. Let's see if we can get that working for you. 

I know you said that you get an error when you tried to restore your iPhone but it keeps happening. I would take a look at the article below to look up the specific error number. Then it would be a matter of following the troubleshooting provided to get that working. Another thing to try is to test on a different user or computer all together.

Get help with iOS update and restore errors
https://support.apple.com/en-us/HT204770

Take care