** Dialog Semiconductor set for its worst open in3 months after disappointing results from major customer Apple
** Apple shares down 7 pct after missing iPhone targets,forecast also weak
** Dialog called down 4-5 pct by brokers in pre-market
** Negatives expected for Imagination Tech and ARM (called down 2-3 pct), slight positive for Swatch (up 1 pct), which makes products competing with Apple'sWatch
(RM: alasdair.pal.thomsonreuters.com@reuters.net)