NTT Docomo has posted second-quarter net income of JPY137.33 billion (US$1.5 billion), down 21 percent year-on-year following a reduction in data transmission charges, notes TeleGeography. Operating income dropped 17 percent to JPY233.4 billion as revenue contracted 3.4 percent to JPY1,060 billion. The operator also cut its target for handset shipments for the year to 31 March 2010, down from 19.7 million to 18.2 million.