Is this battery life normal?

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product: iphone 4
time: 7:30pm
usage: 5 hours, 26 minutes
standby: 8 hours, 45 minutes
battery percentage: 30%
additional information: i've texted lot, sent videos , pictures, played few games, , have done boatload of web surfing!

 

no matter post it's going normal. it's impossible battery life "should" getting, everyone's usage patterns different.

 

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