Get data off iPhone without iTunes sync or WiFi or cellular network?

I water-damaged my iPhone 4s. Net result is that the phone powers up normally (mostly) when connected to a wall charger. I can see my old home screen, pictures, etc. When connected to a computer for USB-charging, it shuts down soon after the Apple logo pops up. So connecting to a computer does not work. Unless there is a way to wall-charge and USB-sync at the same time? WiFi does not work. The WiFi settings slider is greyed out. > http://support.apple.com/kb/HT4859 > iCloud automatically backs up the most important data on your device > running iOS 5 or later. It will run on a daily basis as long as your device: > - is connected to Internet **over Wi-Fi** - is connected to a power source - has the screen locked Apparently you cannot do an iCloud backup over mobile data, so that is out as well. Just called Sprint... cannot activate the phone without either syncing or with WiFi. So out of luck for the cell connection too? So, the question is, is there *any* way for me to do an iCloud backup of this iPhone? Is there a way for me to manually back up things like pictures without WiFi or iTunes sync or the cellular connection?