South Koreas three mobile carriers have brought forward the launch of Samsung Electronics Co Ltds flagship Galaxy S5 smartphone to Thursday, in a bid to cushion the blow from a sales suspension slapped on the operators. Regulators have banned SK Telecom Co Ltd, KT Corp and LG UPlus Corp from signing up new customers or replacing phones for some existing customers for various periods totaling 45 days between March 13 and May 19. SK Telecom, South Koreas biggest mobile carrier, said it started to offer the Galaxy S5 at 866,800 Korean won ($810) on Thursday, cheaper than its predecessor.