Hello modmyi community!

My iPhone 4's microphone has stopped working during calls. It works in all other apps but not during a call. I've tried plugging in my original Apple headphones with a mic and that doesn't work either on calls but works in all the other apps. My phone isn't currently jailbroken (but can be) and is running iOS 5.1.1.

I think there's a problem with the top mic on my phone. It's probably broken. Is there a jailbreak tweak that will force the OS to use only the bottom mic for calls?

This would help me immensely!

Thanks everyone, have a great day .