My iphone 3gs keeps flashing up with the apple logo?

I have an iphone 3gs around 1 and a half years old which keeps flashing up every few seconds with the apple logo, also when I connect the charger the phone will not charge. What can I do for it to work properly again?

Quite a simple problem but you must be prepared to work to fix it. Wearing only jeans an a T-shirt ( no socks or shoes ) find a street with two payphones and 3 rubbish bins, now you must empty the first 2 bins and call a man called Rut Smith from Utah. Ask Rut if he has a caravan if he says then your iPhone will start to work immediately, if he says no then within 3 minutes you will see Army vehicles rushing past you and you will be dead in 5 minutes from the nuclear radiation. As will every single person currently on this planet.

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