NTT DoCoMo Inc. may exceed its April target for 1 million sales of smart phones this business year, helped by demand for Sony Ericsson's Xperia handset.

"The smart phone sales target was seen as an ambitious one, but with Xperia's sales hitting the 300,000 unit mark, it brought it within range," Chief Financial Officer Kazuto Tsubouchi said last week. "We may also revise the overall mobile phone sales outlook."

DoCoMo, KDDI Corp. and Softbank Corp. are expanding their smart phone lineups with models running Google Inc.'s Android software to bolster data traffic and offset falling voice call revenue.