I cannot hear or be heard when I make a call with my Blackberry

try update your software using blackberry desktop

Try an update in the desktop manager software. It sounds like a simple software problem that should be fixed by this. If not, go see Sprint.

Your phone is set on handset mode.While playing music,press the blackberry button and select the activate speakerphone option on the list.This would work for you.

hi Titchypink.
this is all i could find out,hope it helps you out.
Trackpad, trackball, or keyboard not working on a BlackBerry smartphone running BlackBerry OS 7.1 and earlier Article Number: 000029640 First Published: April 26, 2017 Last Modified: April 26, 2017 Type: Support

Environment

• BlackBerry smartphones running BlackBerry OS version 6 to 7.1
• BlackBerry smartphones running BlackBerry Device Software 5.0

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Overview

In some situations, a BlackBerry smartphone with a trackpad or trackball may experience issues with sensitivity, latency, or scrolling. Additionally, the BlackBerry smartphone keyboard, or other buttons may be unresponsive.
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Cause

This issue might be caused by one of the following:

1. The trackball/trackpad sensitivity needs to be adjusted.
2. Make sure the trackball/trackpad is not affected by a software freeze or an application freezing.
3. The BlackBerry Device Software is out of date and requires an update to resolve the trackpad, trackball or keyboard issue.
4. The physical trackpad, trackball or keyboard hardware is malfunctioning.

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Resolution

Resolution for Cause 1
Complete the steps in Article 5447 to ensure the trackball/trackpad sensitivity is correctly.
Resolution for Cause 2
For BlackBerry smartphones running BlackBerry OS version 6 to 7.1 using a trackpad, complete the following:

1. From the Home screen, select Options.
2. Select Typing and Language.
3. Select Trackpad Sensitivity.
4. Ensure Audible Roll is selected.
5. Rapidly roll the trackpad up, down, right, and left.
6. If an audible click is heard while not responding, proceed to Resolution for Cause 4 as this could be a software related problem.

For BlackBerry smartphones running BlackBerry Device Software 5.0 using a trackball, complete the following:

1. From the Home screen, select Options.
2. Select Screen/Keyboard.
3. Ensure Trackball Audible Roll is selected.
4. Rapidly roll the trackball up, down, right, and left.
5. If an audible click is heard while not responding, proceed to Resolution 4 as this could be a software related problem.
6. If an audible click is not heard, the problem may be related to a hardware issue. Please contact the wireless service provider for additional steps.

If an audible click is not heard, the problem may be related to a hardware issue. Please contact the wireless service provider for additional steps.
Resolution for Cause 3
To update BlackBerry Device Software using BlackBerry Desktop Software see, Article 11320.
or
To update the BlackBerry Device Software on the BlackBerry smartphone visit http://www.blackberry.com/update/
Resolution for Cause 4
Use the BlackBerry Virtual Expert diagnostics application. For more information, see Article 35973.if not try this link. blackberry scroll pad is not working Google Search

Hi,

Turn off your blackberry and take the battery out, place it back in and turn it back on.

If this fails to work then your mouthpiece is faulty, please contact a blackberry certified personnel within your area.

It would cost you below $20 to fix this.

Regards

First, you will need to download and install the latest version of BlackBerry Desktop Manager software from https://www.blackberry.com/Downloads/contactFormPreload.do?code=A8BAA56554F96369AB93E4F3BB068C22&dl=DA5FB46338C8C0DCB1039F7898184FC5

Once installed, connect your BlackBerry to your computer via the USB sync cable. Open Desktop Manager, and click the Application Loader. On the right, you will see Update your device software. Click the Start Button, and if your BlackBerry is not on the latest Handheld Software, an update will appear. Select the update, and run the install. Be sure to select the option that backs up and restores your data. Once started, do not shut down your computer, or disconnect the USB sync cable as this could damage the device.

Once completed, your BlackBerry will restart and you will have the latest version available. This version has been known to correct various issues.

First, download and install the latest version of BlackBerry Desktop Manager software from: https://www.blackberry.com/Downloads/contactFormPreload.do?code=A8BAA56554F96369AB93E4F3BB068C22&dl=DA5FB46338C8C0DCB1039F7898184FC5

Once installed, connect your BlackBerry to your computer via the USB sync cable. Open Desktop Manager, and click the Application Loader. On the right, you will see Update your device software. Click the Start Button, and if your BlackBerry is not on the latest Handheld Software, an update will appear. Select the update, and run the install. Be sure to select the option that backs up and restores your data. Once started, do not shut down your computer, or disconnect the USB sync cable as this could damage the device.

Once completed, your BlackBerry will restart and you will have the latest version available. This version has been known to correct various issues, like volume issues.

If the issue is still present, then it could be hardware related, and may need to be repaired or replaced. I would then suggest contacting your Provider for Hardware Support.

You can try to download and install the latest version of BlackBerry Desktop Manager software from: https://www.blackberry.com/Downloads/contactFormPreload.do?code=A8BAA56554F96369AB93E4F3BB068C22&dl=DA5FB46338C8C0DCB1039F7898184FC5

Once installed, connect your BlackBerry to your computer via the USB sync cable. Open Desktop Manager, and click the Application Loader. On the right, you will see Update your device software. Click the Start Button, and if your BlackBerry is not on the latest Handheld Software, an update will appear. Select the update, and run the install. Be sure to select the option that backs up and restores your data. Once started, do not shut down your computer, or disconnect the USB sync cable as this could damage the device.

Once completed, your BlackBerry will restart and you will have the latest version available. This version has been known to correct various issues.

The walk thru for updating your phone software is quite extensive (would be alot of typing). First you need to check your software version against your provider's most recent version. You find this by going to settings>options>about. When you update there are two main things you must have - 1.) the most recent version of Blackberry Desktop Manager and 2.) the most recent version of your device software, both are installed on your computer and should be available though the Blackberry website. I can provide you with KB article numbers from the Blackberry support site for the rest. Go to www.blackberry.com/support and search KB13427 and KB03621.

what con i do