USB device (iPhone 4S) could be recognized & might be malfunctioned

[chenxiang1]

I just tried to connect my iPhone 4S to my PC but I received the USB not recognized error. A few days ago, I tried to connect it successfully. Now it cannot be read, my phone cannot be synced (and I did not set up wireless syncing).

Anyone is able to help me out? I have many messages & contacts that needs to be synced, otherwise I will lose all of them when I change it.

 

[DarkBlue]

Setup iCloud, use wifi to sync.

 

[Unclemun]

I just tried to connect my iPhone 4S to my PC but I received the USB not recognized error. A few days ago, I tried to connect it successfully. Now it cannot be read, my phone cannot be synced (and I did not set up wireless syncing).

Anyone is able to help me out? I have many messages & contacts that needs to be synced, otherwise I will lose all of them when I change it.

Using another cable with same phone, try on same computer
Using the same cable, try it on another computer.
Using another cable, try on another computer.

Let us know your findings.