Why is my iPhone 4 battery dying so fast?

In school today, I didn't use it at all. It was at 98% when school started, then 7 hours later it was at 12%! It usually only gets down to 90% at the end of the day. What's wrong!

It may be because you have apps.running due to use from another time. Make sure you do not have any apps.runing

You probably have to much data on it try deleting unnecessary data and then at school put it on power saving mode or airplane mode

Probly beacues if you have the light oh high and sound and stuff like that in the settings than it will die fast or if you have a lot of apps than it will die fast

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