Built on Android operating system and featuring the powerful quad-core processor, the HP Slate6 and HP Slate7 are engineered for the way people multitask, while offering access to entertainment.

Both devices come equipped with a 3G(3) dual-SIM Dual standby(2) feature, providing voice connectivity and performance that allows people to work and play on the go, the company said. It will also have front and rear cameras.     

"Consumers are looking to consolidate their phones and tablets, which is propelling the voice tablet market," said Ron Coughlin, senior vice-president, Consumer Personal Systems Group, HP.

"This is an exciting new category that represents a meaningful growth opportunity for HP. Our HP Slate VoiceTab provides consumers with a high-quality product at a great value," he said on Wednesday.

According a daily, big-screen devices with calling capability have been particularly popular in Asia and Europe, where they appealed to early waves of consumers who were interested in tablets, but not in carting around two devices particularly on the long train commutes that are more common in those regions than in United States.

"But 'phablets', as these phone-tablet hybrids are so often called, are steadily gaining ground here, as well, as people use their phones more for watching video and surfing the Web than making calls," the daily said.