The iPhone 5’s call speaker is pretty good, but there are times when it could be a little louder — like when you’re in a crowded place. As always, the jailbreak community has a solution to that problem. It’s called Volume Amplifier, and it’s a new tweak that promises to amplify your iPhone’s call speaker volume by 200%.
New Tweak Promises To Amplify Your iPhone’s Speaker By 200% [Jailbreak]