i have a problem with my iPhone 4 ios5.0.1 when make or received call, the person on the other side cannot hear me. what bugs me out sometimes the microphone working fine.

but then i tried sound recorder the microphone working fine. is this hardware problem? my phone is still under warranty. should i go warranty it?

---

Added on December 21, 2011, 10:46 pmi tried restore with backup setting and as a new phone. problem still occurred


This post has been edited by nuox: Dec 21 2011, 10:46 PM