Bharti Airtel Ltd., India’s largest mobile-phone operator, surged the most in a month in Mumbai trading after posting second-quarter revenue that beat analyst estimates. Sales rose to 213.2 billion rupees in the three months ended Sept. 30 from 194 billion rupees a year earlier, New Delhi-based Bharti said today in a statement. That beat the 209.3 billion-rupee median of analysts’ estimates compiled by Bloomberg. Net income in the period fell 29 percent to 5.12 billion rupees as a slump in the rupee led to foreign exchange losses, New Delhi-based Bharti said today in a statement. That trailed the 7.9 billion-rupee median of 31 analysts’ estimates compiled by Bloomberg. Source: Bloomberg.com