Data cable Issues
1. If you are using a Shanzhai version of the data line then the problem is out in the cottage version of the data line, we can try to use the original data cable, so it is estimated that can solve your problem.
Computer USB port or USB driver has problems
1. We first test the hardware is not the interface problem, if it is connected to the computer USB problem, we can try to change the USB can also be their mobile phone with other computers to connect, of course, if there is no other computer we can use U disk to try, If you can use the USB drive, it's probably your data cable.
Apple 5s doesn't connect to ITunes
1. If it is not a data line problem we connect the phone to the computer after the computer can identify the device, but the itunes discovery can not connect us to reinstall the itunes software, or we will open the itunes software and then try to connect the computer.
2. If not, we may change a computer or restart the Apple phone system Oh, this may also be possible oh.
itunes version Issue
If you're using ios7.1 and your itunes software is a long time ago, we can upgrade itunes to the latest version of itunes software, so we can probably solve your problem.
iphone System Issues
We can try to restore the phone to the factory set up, so generally can solve your problem.