Hi,
I am a tech support for a major canadian provider. started having this issue about a month ago. and now it became really annoying as it happens frequently and while am using bbm/text/on a call/ news/ fb... well randomly.
contacted blackberry who of course refered me to my provider, which would be me.
downgraded the OS. didn't work, downgraded it again to an even older version (first 7.0). same problem. wiped/restored. same issue. removed all apps, and completely DUMPED / briked the OS using BSAK, and loaded the new OS completely from scratch. still have the same problem. again the screen becomes black, but not total black, like we can see that it's light up but can't see anything on the screen. removing battery of course doesn't fix anything as it happens too while in the boot process. now for me this is a major hardware failure and what's astonishing is that my manager has the same problem, and he was so pissed off that he bought a diff brande and didn't bother repair process. now am bringing this phone today to a repair center. and we'll see what happens from here. but this is NOT a software issue otherwise it would've worked by now. used it for the past 8 months and it was perfect.
