I recently discovered that sun rays had started affecting my bb bold 9900, I checked the forum and discovered that someone had also complained about such but there was no solution proffered, as soon as I take d phone out of the house, it begins to malfunction, the menu begins to click and unclick itself, the software was roloaded, the certificate renewed and a lot of other stuffs, it wasn't still working well until I decided 2 change the trackpad, bammmm!, that was the solution, now my bold 9900 does not react to sunrays anymore. Just incase you have same problem, pls change your optical trackpad.
Did you change the TP yourself? I am thinking about also changing my trackpad, but I somehow worried that I could break my phone. Is it difficult to do the change?
If don't have an idea how to replace it i wouldn't risk to.
You need to be atleast a little handy to disassemble it.
The trackpad is attached on the keyboard with an ribbon cable under a lock.
The removing part is the easiest, but sticking the trackpad's ribbon cable back,
Is a pain in the , since you need to be gentle on it as you can break it.