Iphone 4 Speakerphone not working

[Delaware]

I am having iPhone 4, I realized that a single speaker on the two walked, therefore the tactile was dead! All that to say that Apple has provided me a new one that I picked this morning! I put on some music and I realize that ... the sound does not work better! Indeed, one speaker works. I know what's coming or if I am really so con! xD. I want to why Iphone 4 Speakerphone not working. I look forward to your answers! Thank you!

[Simond]

I have a problem with speaker and microphone of iPhone 4, they do not work anymore, I can have sound with headphones, but more on speaker phone. I watched a video on youtube, and suddenly the sound is gone. I try removing the jack and replacing it again but it did not change anything, apparently it is not blocking the sensor which is unlike many cases that we had this problem. Then I do a microphone test by calling and it no longer works either, but with the headset yes, basically I think my microphone and speaker integrated iPhone have Roasted.

[Paxton]

When I receive a call on my iPhone 4, built-in speaker is not working. When going off the "speakers". It works correctly. Also when I put the headphones, it works flawlessly. When it opens its iPhone, there are three layers connected on the screen. Each of these layers has a number. I want to know what they are, because I had to open the iphone to remove a sim card. But I do not want to take risk with my new iPhone.

[Quentin]

I just noticed that for some time, the speaker crackled in my and I just noticed that only one in the two works! Another thing, when it is dark jai two small bright spots on the side, top (not on screen): as a problem finishing. Have you ever had this? Otherwise, do not take the protective shell that broke off belkin my iphone when it fell yesterday.

[Venator]

Since this morning, I encounter a problem wonder: my iPhone 4 still think that the headphones are connected. In fact, I cannot take a call without the hands-free; I cannot listen to music on the speaker phone, etc. By cons, during a call, the phone rings but I heard not my correspondent if I do not plug the hands free kit. I rebooted, but nothing has changed. Someone knows how to solve this problem? Is there a need to change the setting?

[Ernest]

A cleaning of the mini-jack socket might be effective or when a series of connected-disconnected succession to put the sensor in the presence of the headset function. Otherwise, it would restore effective because it seems that the only way to resolve a lot of problem with the iphones right now! A quick blow dry air inside should not hurt. Try these measures, I am not confident but there are chances that it can solve the problem.

[Muwafaq]

It's actually a bug in the iPhone 4. Needless to return the phone at customer service! If increasing the volume when you phone, AC branded headset can be solved “easily" To do this, proceed as follows (some steps may be unnecessary but it works):
1: connect a headset on the iPhone 4 and pass a phone call (although you do not have a microphone on the headset)
2: Activate the speaker. Normally your correspondent must also hear you
3: remove the helmet
4: disable the speaker
And now it is repaired. I hope it will help a lot of people. I will make a bug-report to Apple but the problem is difficult to reproduce.