Industry watchers estimate a combined 270 million S7 and its Edge variant phones have been sold in the first half of this year since their March launch.Running on the upbeat mood, Samsung has also adopted the curved screen for the upcoming Galaxy Note 7 phablet for the first time.The new Note will be unveiled on Aug. 2 in New York, London and Rio de Janeiro.By Kim Young-won ( wone0102@heraldcorp.com