My niece played with my iphone 3gs for a while and she ignored the low ... Apple iPhone forum
My niece played with my iphone 3gs for a while and she ignored the low battery warning. Now, I can't open it even if I charge it. I've been charging it for at least an hour yet the screen won't even display the charging screen. Sometimes the screen that says you should charge it appears but that's all. What could be the problem?
You should leave it on the charger overnight.
Like Rog said, leave it on the charger overnight and then try doing a hard restart too. Hold the home button and button on top down at the same time until you see the apple logo. Doing that is the equivalent of a battery pull on other phones.
Thanks for these guys!