Why does my iPhone battery die so quickly?

I had my iPhone for about a year and a half, and recently I've noticed that the battery is draining incredibly fast. I've always had it on 3g internet/Wi-Fi and the battery never died this fast so I don't know what the exact problem is. I charged it to 100% yesterday and I only used it for maybe about 10 minutes and left it untouched for the rest of the night. Today when I woke up the phone was dead. I haven't changed the settings or anything fyi.

The battery ages and gets weaker over time… Just like us.

Many people regularly overcharge they're phones, this shortens the life off the battery, & eventually even becomes dangerous. A sign is the battery gradually becomes swollen. My first phone was an old 2nd hand orange one & this was happening to it. When I got a new T mobile one, Tmobile staff they opened it to trasfer my contacts & pointed this out. If this isn't the case with your phone, its a good thing to know & pass on anyway, phones usually should be charged only 2 hours, all the best

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