when i call or recevie no voice

Hi imu360,

If you are having issues hearing sound on your iPhone, these troubleshooting steps should help:

iPhone: Can't hear through the receiver or speakers

Symptoms

When someone calls, I can't hear them through the receiver or speaker phone, and I can't hear music through the speaker. I also can't be heard by someone who is calling me.

Note: iPhone has one speaker, which is adjacent to the dock connector. On iPhone 4 or later models, the speaker is to the right of the dock connector. On earlier iPhone models, the speaker is to the left of the dock connector.

Resolution

1. Verify that there is nothing plugged in to the headset jack, including headsets, headphones, or adapters.
2. Make sure the Ring/Silent switch is not switched to silent.
3. While on the Home screen, adjust the volume buttons. If you see the icon below, indicating that headphones are attached, there may be debris or an object lodged in the headset jack:
4. Check the headset jack. If there is an object lodged in the headset jack that is not easily removed, have the iPhone serviced to remove object.
5. For Original iPhone: If there is light debris, such as lint, in the headset jack, try connecting a pair of headphones to the headset jack and then remove the headphones. Repeat this several times to remove the debris.
6. If you have installed a protective film on the display, either ensure that the receiver is not covered or remove the film completely.
7. Check the receiver mesh (which is on the top front of the device, above the display). If it appears blocked, use a clean, small, dry, soft-bristled brush to carefully and gently brush away any debris.
8. If you have paired with a Bluetooth headset that is nearby, either use the headset or turn Bluetooth off (chooseSettings > General > Bluetooth).
9. Restart the iPhone.
10. If restarting the iPhone doesn't resolve the issue, try restoring the device.
11. If the issue persists, go to the Service Answer Center - iPhone for information on service.

Hopefully, these steps will get you back on track ...

- Judy

i can play music, a speak trough facetime, viber, bbmcalls, i can send voice.

But still they cant hear me and i cant hear they, and the screem frezze a little bit. i take the iphone to an APP AGENCY but they dont know what the problem is and im from VENEZUELA and the store i think that they dont have the necessay equipment to reach the failure.

PLease need your help