Iphone 5 ringer not working

I just updated to iOS 6.1 today evening and in a few hours the ringer stopped working.

I have tried all of below

1. Check mute button,

2. Soft reset

3. Hard reset.

Nothing works. Suddenly when a call comes it will ring once and stop.

No keyboards clicks, cant hear music either.

When i put the call on speaker mode it doesnt work either.

Please help...

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