Just noticed this today, upon receipt of an email, when I remove the BB from holster the screen flicks on and then blanks, if I wait it comes back as it should
Sometimes it also blanks when I click on the mail box which opens but then the screen goes blank/black for a short period. The screen comes back in about 10 seconds and then if I click on the email it opens but the screen then blanks out.
I wait a little and then I can open and read the email.