My IPhone battery decreases when I go to sleep?

Q. Whenever I go to sleep, in the morning my IPhone battery decreases. Nobody is using it because I put my secret password and everyone's asleep. Why is the battery decreasing? Please help!

A. It would still decrease the battery even if its not used. That is a large decrease while the phone is not fully active.
It might be in sleep mode over night
You might have things like email push turned on.
You might try terminating all background apps...double click the home button, then hold your finger on the apps that appear along the bottom bar, and when they start to wiggle and a red circle appears with a minus sign, tap that for each app and terminate all of them.

Is there something wrong with my iphone battery?

Q. I recently bought a used iphone off ebay. It is about 12 months old. I am just wondering my iphone usage is a little over 2 hours and my standby is 7 hours. And my battery life is around 33% at about 6.00. I fully charged it the night before and it was full battery in the morning. Would i need to change my iphone battery or is this normal?

A. i guess your battery's life span is over you should change a new battery

what product is good to make my iphones battery last longer?

Q. ive looked at the Griffin PowerBlock, and another one thats like $80! but was supposedly really good. But i just got the iphone 3GS and i didnt "kill the battery" the first time i got it, (is that event true? like you have to kill the battery inorder to have a longer battery life?) ...

anyways, which product/tips to you recommend, for my iphones battery life to last longer?

A. Charge it exclusively through a USB port on your computer. It will do a 'deep cycle charge' often that a 120V 60Hz wall outlet will not. Yes, killing the battery and charging it fully works with some cell phone batteries like Nickel Cadmium, But the technology of Lithium ion batteries has gotten pretty sophisticated recently.

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