Iphone4 's handset suddenly didn't sound iphone4s answer the phone no sound

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Have you ever fallen or plugged in a headset? I've tried it, and it should have been a problem with the receiver. The headset should be inserted after the headset unplugged, but the inside of the shrapnel does not eject, causing the phone mistakenly think that the headset access without sound.
You can use the mouse pad pad, knock a few, or use a cotton swab to dial down on the line.

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Handset door, the motherboard is broken, go to the Apple Store appointment Genius Bar, replace the motherboard, one hours can take oh new machine.
If you are far from Shanghai Beijing can only go to the special repair point change, but I only believe genius Bar, do not believe those special repair point

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I am also you such a question, the result I broke the mute again to break back to be good. The next day to wipe the headset and silent, I put the headset repeatedly inserted until the sound of the hole sealed dead, until now has been normal. It should be the problem of internal wiring contact.

All asked iphone4 handset inaudible, while the microphone and speakerphone and headphones are normal friends attention, the problem is resolved as follows: Press the left to turn the volume size button, if the headset appears two words, so-----insert headphones back and forth to insert a few times if the headset two words are missing, you can, It's the phone, you're using headphones.

I've had the same problem, and it's been bothering me for 2 days. The 400 phone call to Apple was not solved. The internet found that many people have the same situation. But now we have finally solved the problem. I also doubt the problem, I'm sure the hardware is not bad. Think of the possibility of a short circuit, that should be the following charging interface with dust. Key point: Wipe with the alcohol swab, very miraculous recovery. (1 hours in a row, so the first time to share it) is very effective, quickly try.

If you are not in the headset when the speaker playback audio and video files have sound, but also strictly follow the steps I said to restore all settings, the headset is still no sound is the phone or headset problem. You click on the phone: settings > General > Restore > Original all settings