My trackball on my blackberry curve works on everything but the mailbox what could be causing this?

Your trackball and the keyboard seems not working. You may need a replacement for both parts.

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

Back to top ?

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.
Back to top ?

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 The BlackBerry Device Software is out of date and requires an update to resolve the trackpad, trackball or keyboard issue.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.

Back to top ?

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

instructions are on this site hoe this helps http://www.blackberryforums.com/general-8300-series-discussion-curve/108122-how-clean-your-8300-blackberry-trackball-pic-guide.html

everyone has the same problem with blackberry trackball. i wonder why the rim installed such a hardware in their phone. it makes a lot of trouble.

to fix it simply use a straw, no need ro replace or disassemble the blackberry, read more from the source http://www.unique-stuff.co.cc/fixing_sticky_blackberry_trackball.html

www.fonlogix.us is a good place. See the link below.

http://www.fonlogix.us/BlackBerry-Trackball-_c_244.html?gclid=CL-d0KS2q5sCFQk_agodVn7zAg

is there a way to navigate thru options with no trackball

It is a very common problem. You just need a new trackball. Should be about $25. If you want to make it work temporary, then just removed it and clean the trackball and the phone part under it (on the phone itself) with 99% alcohol. It might work for a while again

Depending on how comfortable you are with removing the trackball it's not hard to fix... you may have some dirt or grit interfering with the trackball and/or sensors. Take a small screwdriver or blade and gently pop the silver ring around the trackball off. This will free the actual trackball housing. Use an old toothbrush to clean everything. I also soaked the trackball in a little rubbing alcohol. Just make sure it is completely dry before reassembling. If that doesn't work you can purchase replacement trackballs from places like crackberry.com.

you need a new trackball. Contact www.fixphonenow.com they can provide you with a new trackball.

Usually the clips of the chrome ring break and don't snap back into the frontplate. There are :<a href=http://www.portatronics.com/guide/Smartphones-Repair-Guide/>Blackberry Curve Repair Guides</a>online that show you how to disassemble the Curve, if need be.