I have a BB 8530 Curve.  My WiFi works fine at times but it often cuts out and the "WiFi" goes grey.  Then anywhere from 10-30 minutues it will come back and it just keeps doing this. When I check my WiFi diagnostics, my home WiFi is connected but the BlackBerry Infrastructure is not. Then when it starts working again, the BlackBerry Infrastructure shows as "connected".  I have this problem no matter if the phone is set to "HotSpot Browser" or "Internet Browser".  I have a Belkin router.  Does anyone have an idea how to fix this so my WiFi doesn't cut out?