I updated my Iphone4S this week to the newest IOS 7.1 and now everyone who calls me says the calls are not clear, muffled.  Is there something I can do to clear this?  4 people in 4 different states that called me all said the same thing.

I updated my Iphone4S this week to the newest IOS 7.1 and now everyone who calls me says the calls are not clear, muffled.  Is there something I can do to clear this?  4 people in 4 different states that called me all said the same thing.

Settings > General > Reset > Reset Network Settings
Contact the carrier to troubleshoot.

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