iPhone 5 losing considerable battery life when on standby

Hi,

I'm not sure if it's me but the battery life on my new iPhone 5 seems to be shocking. When left on standby overnight only connected to wifi, nothing active in the background it loses 4-6% and when at school i looked at my phone an hour later and it had lost 2%(3g off). This cannot be normal, my ipod touch 4g wasn't this bad and both my parents iphone 4 and 4s arent this bad.

Should i be concerned?

Thanks

fuzion11 said:

I heard doing a DFU restore fixes the issue with the batt problem...I'm going to back my phone up, do the DFU and restore from backup and see if that helps out.

Click to expand...

What is the DFU and how do i restore it?

Thanks