Why does my iphone battery suck?

It was fine when I first got it, it would hold a charge all day even if I was on it a lot. Now the battery sucks and I'm charging it like three times a day at least even if I'm barely on it. What can I do to fix this? The apple store told me to restart it but that did nothing.

If your display is bright, or you leave the Wi-Fi on, and constantly use apps, the battery drains A LOT faster

Turn down your screen brightness, and close out apps completely by double tapping the home button then holding them and xing them out

Screen brightness, apps open in multitasking, and Wi-Fi/Cellular Data can all bring down your battery life. Keep your brightness at the lowest possible setting that you can see the screen. Go into the multitasking drawer and close any apps that you're not using. Turn of Wi-Fi or go into airplane mode when you're not using your phone or at night.

  • Would it suck all my battery life? I have a iPhone 4 and tomorrow I'm going on a 4 hour journey. I have two 1 hour episodes on my phone, if I was going to watch one would my battery be flat by the end?
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