Hey guys I've noticed a problem with my iPhone 5, where there is static noise coming from the bottom speaker. I can hear it when placing my ear near the speaker. Anyone else noticed it? Tried to do a hard reboot, but noise comes back after about 30 seconds. Also tried restoring (clean install - not from backup) but the problem comes back after I've used a few apps... Should I go to the store to get it replaced? Or is this normal?