iPhone 5 Has The Loudest Speaker Among All Of The iPhones

Here is one test you definitely don't see everyday. In this test all of the iPhone released through the years is tested. The thing which is tested is the speaker volume and the phone with the loudest speaker is the iPhone 5. You can see in the image above that all of the iPhones before the iPhone 5 has a speaker volume of below 100 dBA. Watch the video below to see the testing. 
Source: Phonearena 
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