A question to Icon owners running WP 8.1 or other Lumia phones upgraded to Cyan. Does the new OS still support the call and SMS filter/blocker? My husband just got the new HTC One with 8.1 preinstalled..and no call blocking. We have 3 days to decide to keep it or exchange it. If Icon or Lumia in general still has this feature under 8.1 or cyan we may exchange.