Apple doesn't allow third-party apps to access call and messaging data, something TRAI wanted to develop the DND app. Back in August, Apple pulled 25,000 apps from its store in China following criticism from the state-run media, which accused it of allowing banned content on the platform. This was back in July. Apple said that they would not include the DND app by Trai into the App store, the reason being some privacy concerns. Eventually, TRAI and Apple agreed to make a version that doesnt share call log information to the Indian Government. The Telecom Regulatory Authority of India (TRAI) has been fighting with the Cupertino-based company over the app for months. It is important to note that to download the application, the iPhone and the iPad users will need to upgrade their device to iOS 12.1 or later software version. The problem, according to sources within Apple, was that the TRAI-DND app was deemed a privacy risk. It applies same to the SMS as well; just to the message and the bottom, select Report Message and it will get registered at DND and you won't be bothered again.
Indian consumers sporting an iPhone running iOS 12.1 or later can install the DND app for free by clicking on this link.
With the release of the TRAI DND app on iPhone well before the January deadline, that threat of deactivation seems to have been staved off. "Provided that where such devices do not permit functioning of such Apps as prescribed in regulations 6 (2)(e) and regulations 23 (2)(d), Access Providers shall, on the order or direction of the Authority, derecognize such devices from their telecom networks". That's because Apple rakes in huge cash through its App Store sales each year from China.