It could also threaten the survival of Vodafone Idea, a joint venture between Britain’s Vodafone Group Plc and India’s Idea Cellular, as the unit is saddled with about $3.9 billion in overdue payments, the biggest portion of the entire industry levy. After the October ruling, its parent Vodafone Group had said the situation for its India venture was “critical.” “With Aditya Birla and Vodafone groups unwilling to infuse equity in Vodafone Idea, we see a strong possibility of Vodafone Idea going for bankruptcy,” analysts at Credit Suisse said in a note, while suspending their rating and target price on the stock.