Volume on a call is LOW, earpiece fine

[Shanezam203]

Hey Guys, my iPhone was working fine... But lastnight I had a real hard time hearing people when on the phone, asif the volume was on low.

I made sure the volume was UP and I still can barely hear people when on a call. When I use an earpiece volume is corrected and back to normal. Same with a Bluetooth, I can hear fine with Bluetooth and a wired ear piece...

Any idea what happened to the speaker?

Thanks,
Shane

[ColsTiger]

You may have a defective ear piece. Is the phone still in warranty? If it is I would take it back to the Apple store.

[Youngbinks]

I would recommend taking it to Apple as well, just in case the speaker is defective. It should still be under warranty and Apple should be able to take care of it with no problem.

[Shanezam203]

I am worried to bring it to apple because it's unlocked and I got it used so I dont have a receipt...

Advise?