Indias foreign investment regulator deferred a decision on Vodafone Group Plcs proposal to take full ownership of its Indian unit in a $1.6 billion deal, two government officials said on Monday. Vodafone, which entered India in 2007 by buying Hutchison Whampoas local cellular assets in an $11 billion deal, directly and indirectly owns a combined 84.5 percent of Vodafone India, the countrys No.2 telecoms company by users. Vodafone directly owns 64.38 percent of the India unit.