Airtel users in Delhi-NCR suffered network issues on Saturday evening owing to a problem in the network node.
A lot of Airtel users took to social media, posting messages about non-availability of service.
The company later tweeted that it was working to fix the problem.
“We are experiencing a network outage in Delhi-NCR. One of our network nodes has got corrupted and we are working to fix it,” the company said in the tweet.
Services were fully restored late on Friday night, a spokesperson said.
The company has 11.6 million mobile customers in Delhi-NCR.