I have the same problem.
I'm using an iphone 5s, Windows PC
Phone *used* to ask to allow the PC to talk to the phone, and I could view photos on the PC, but it no longer does this.
The phone *does* charge when connected to the computer, so I would be surprised the cable is the issue.
I have read other replies, on this and other pages, and have:
- restarted computer
- restarted phone
- reset network settings on phone (thanks Nicole Villos for your excellent instructions)
- stopped and re-started Apple Mobile Service on PC (thanks Nicole Villos for your excellent instructions)
- updated itunes on phone
- tried different USB ports on PC
- tried different USB cable
Still no luck.
Does anyone have any helpful suggestions?
I'm not a techie, so step by step instructions like Start > Control Panel > xxx > yyy will be much appreciated.
Thank you.