I have a alcatel onetouch and wen someone rings me and i answer i can here them but they carnt here me why is that

hi Jo.
this is all i can find at mo.

1. From the home screen, tap the All Apps icon.
2. Scroll to and tap Settings.
3. Scroll to and tap Sound & notification.
4. Tap Default notification ringtone.
5. Tap the preferred notification sound and then tap OK.

Change the phone ringtone and notification sound on your Alcatel ...

devicehelp.boostmobile.com/.../ONETOUCH.../Change_the_phone_ringtone_and_notifi...
if this does not work then go to this link might help you out some more.
How do change ring and text tones on my Pixi Alcatel One Touch Google...

Contact your cell phones service provider and they can provide the answers for this over the phone or at one of the local service centers. You can also download ring tones for free in the app store.

This is the link to the user's manual. Download the manual or just click on the pages on the top of the website page.

Alcatel OneTouch PIXI Owner Manual

PUK code unlock: ALCATEL ONETOUCH Fierce ' T-Mobile ...

https://support.t-mobile.com/docs/DOC-11783

T?Mobile US, Inc.Jul 1, 2014 - Learn how to PUK unlock the ALCATEL ONETOUCH Fierce™. PUK codeunlock Related errors: 'PIN code blocked. Enter PUK code:' 'Enter ...

PUK code unlock: Alcatel ONETOUCH Evolve ' T-Mobile ...

You can do so by going to Call Settings from the Settings Menu.

For further details please download this User manual https://support.t-mobile.com/servlet/JiveServlet/downloadBody/7362-102-5-33089/ALCATEL%20ONE%20TOUCH%20Fierce_UM.pdf

Contact the manufacturer of the product.

ALCATEL ONETOUCH Products Support ONE TOUCH 990

problem is with proximity sensor calibration, you have to recalibrate it
1. go to service menu - 1809*#900#
2. in that menu clink on OTHERS
3. there click on PROXIMITY
4. click CALIBRATE and OK
and it should be work properly