iPhone 4 won't charge. Only shows plug symbol?
I woke up and my (AT&T) iPhone 4 won't charge. It just has the plug symbol in the battery picture when it's plugged in. It WILL sync, but won't charge. Battery Doctor app will charge it to 43% MAX in the app, but when I exit out it stays at 39% in the status bar. My warranty IS voided so I can't go to Apple. Any idea? I'm hoping it's just the battery, but I wanna know if anyone has any ideas. I'm on the most recent software.
iPhone 4