iPhone sales will have probably dropped in the current quarter, says Sanford Bernstein' Toni Sacconaghi. The analyst agrees with some investors that other forecasts are too high, and is modeling between 15.2 to 16.2 million units, compared with a consensus prediction of 16.5 million. People may be holding off on buying, says Sacconaghi, because they're aware a new device is around the corner. Notably, the hit is anticipated to be enough to outweigh 19 new iPhone carriers.