India, Aug. 18 -- Users across mobile networks in India were experiencing a prolonged outage on Monday, August 18 - starting majorly with Airtel, then to a lesser degree with Jio and Vodafone-Idea.

The issue was first flagged in Delhi-NCR, and later in Mumbai and Bengaluru too, spreading across India soon after.

"Our customers from Delhi-NCR are experiencing some voice calling issues for the past hour or so," a statement by the company read.

It added, "Significant part of the issue has already been resolved and our engineers are at work to resolve this fully. We deeply regret any inconvenience."

Downdetector, a portal that monitors tech glitches, saw over 3,600 reports of Airtel outages at around 4:32 pm on Monday, as against a baseli...