Caller voice is feeble, have to use speaker to have a conversation

mandar82 Said:

"Caller voice is feeble, have to use speaker to have a conversation: Lately, my phone requires to switch on the Bluetooth or speaker to hear the caller on the other side, as the sound is very feeble. It’s not always possible to put the phone on speaker or have a Bluetooth handy. How can I fix the problem?"

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Troubleshooting iPhone Call Volume:

• Volume Output: If you Can't Hear a Person on a Call or Voicemail or if the Sound isn't Clear on your iPhone - Apple Support

• Volume Input: if your Microphone isn’t Working or People Can’t Hear you While you’re on a Call -Apple Support