How fast should the iPhone 6 Plus die?

I recently received an iPhone 6Plus on christmas two days ago. This is my first time having this phone so I don't know how it really works battery wise. I wanted to know how fast the battery should drain. If I'm on 100 percent at 11A.M should I be on 79 percent at 4:15?

Read the user manual, it has fully in detail to teacher any user like you about this general information.

Depends what you do with it but that's fine

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