My iPhone is dead, how can I get it working?

[iMore Question]

my iphone is dead

My iphone 4 suddenly not working but when I charge it, it works.
What is the problem of my iphone?

 

[SwitchBeach]

Re: my iphone is dead

The battery has, perhaps, reached the end of its serviceable life.

 

[Rob Phillips]

my iphone is dead

Welcome to iMore! I agree with SwitchBeach. Your iPhone 4 battery is pretty old. It may just not hold a charge anymore.