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The LG G4 was released in the US in early June 2015, as always focusing on high-end specifications and a refined fashion sense that makes it stand out in the premium smartphone market. Each version of the phone will have a different model number based on if it is sold by a carrier or unlocked (US or International). Some LG G4's are known to have bootloop problems.

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microphone issue during calls

My LG G4 microphone is not working during voice calls, but work just fine on recording videos or talking on speaker mode.Any ideeas how to fix this?

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Have you checked that the microphone 'input hole' is not blocked, either by a phone cover, dust or lint.

Use a strong light and a magnifying glass to inspect the 'hole' which is located on the bottom edge of the phone,

DO NOT use a pin or similar object to clear the hole if it is blocked, you may damage the microphone which is right behind it.

Here is a link to the Ifixit guide for your phone. Using this will help you to gain access to the hole to clear it if it is blocked.

If you do not wish to open the phone you could try using a vacuum cleaner to see if it will suck out the blockage.

As to why the recording videos and speaker mode works I'm not sure. Perhaps they use a different microphone or maybe they use the 'loudspeaker' as a 'microphone' when in this mode. Speakers can work in reverse to act like microphones.

LG G4 Motherboard Replacement

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Daniel Dinea sarà eternamente grato.
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