What happens to an iPhone if it is off during a month?

I want to know, what happens if your iphone is off and without using during a month?
I have an iPhone 4 and it has been off for a month, without any kind of activity.
Will it still work like before or will it be broken or dead?
Please, I need answers.

Iphone uses Lipo lithium polymer battery that requires frequent top up.one month won't be a problem but one more month will destroy battery.
Since you didn't use for long time, charge the battery for at least 8hrs continue changing even after 100%. This will refresh your battery.

It's important to make sure that the iPhone doesn't remain totally discharged for long. When the iPhone says it has 0% charge, it still has a small amount of charge that is kept on the battery to protect it. But if the phone is at 0% and it is left uncharged, it will gradually use up the small amount of residual charge, and when that happens, the battery may be permanently damaged. So even if you are not using the phone, it's a good idea to charge it up once in a while. Ideally it should be around 50% charged if it's being stored, and it should last for months without charging at that level.