I can't hear anything when I get or make calls on my iPhone

You can silence the ringers on the base and handsets at the same time. It doesn't affect the visual ringer on the phone in standby, press and hold Silent on the base. The phone automatically turns on the answering system and shows Do Not Disturb in the display on handset. (The answering system answers any incoming calls without playing anything through the speaker.)To cancel, press Silent again. If you turn the answering system off while Silent Mode is on, the phone turns off Silent Mode.

What can't you find? The mute button or the iPhone? Makes a difference. If its the mute you may have the phone on silent mode. You wouldn't hear it ring or anything but you would be able to hear music, etc.

Try resettin, hold home button and power button for about 25 seconds, if this doesnt work the speaker prob went out. they have two speakers, one u hear people on and the one u hear music from.

Dear Dburnett412.

If you can't hear the ringer when there is an incoming call to your iPhone 3G, you may have overlooked whether or not the ring/silent switch is set to silence the ringer. The ring/silent switch is above the volume switch. If you can see orange on this switch, it's set to vibrate. Switch it to ring and you should be all good.
If this doesn't help, you may want to consider resetting the iPhone.

Not enough information. Do you get noise with the squelch open? Can you hear other radio traffic but they do not answer you? Is the audio completely silent?

try to turn the silent mode off, on the side of the phone. is that dont fix it. u need to have it looked at. possible the switch is broken.

Depends on the software installed on the computer that "answers" the incoming telephone-call.
You could program it to a "silent" ring for certain telephone-numbers -- the caller hears the "ringing" sound, but you don't hear anything.

Did you accidentally turned on the silent switch? Make sure that you do not see the orange part of the silent switch then set your ringtones again..

I use my iphone as my alarm. The alarm won't off but when I went to shut it off and touched the OK button it wouldn't do anything. It froze! The screen went black with the "Snooze & Ok" buttton is still showing. I tried turning it off but it won't shut off. The only buttons that's working is the volume and the silent button. I can still receive calls but can't hear them...

you can actually move the button , on the top left hand side of your iphone, over the ringer volume, you will see a red or orange dot, this means the switch has you iphone in silent mode, I was stuck on this, until I found it is a actual switch, look at it closely, you can move it. So where you see the red dot, put your finger on it and move it the opposite way, and I do not mean press the button, I mean, flip the switch on it, then your phone will not be in silent mode anymore,,, this was very annoying, I hope it helps anyone that has the same problem.
cheers!