That price cut in the run-up to the iPhone 3G’s release seemed to do the trick for O2 – between January and June it added 137,596 pay-monthly customers; that’s 80.8 percent more additions than the same period last year (. O2 said the growth was driven by iPhone and strong traditional handset connections, along with improved churn. In April, O2 said it would reduce the plain ‘ol slow iPhone from £269 to £169, shifting stock before the new model’s arrival. And customers spent 12.1 percent more on mobile data than last year – non-SMS revenue up 46.1 percent – averaging at