Apple has not gotten the tax breaks it has sought for suppliers to expand local manufacturing – key if it is to avoid steep import duties that have made its iPhones, already pricey for many Indian consumers, even more expensive. Local content prerequisites have also stopped the U.S. tech giant from opening its own stores. The lack of direct sales channels has helped make it vulnerable to discounting and prompted it to recently embark on a major overhaul of its retail strategy.

At the heart of its latest tussle with the government is India’s pervasive problem with spam and nuisance calls – one the Telecom Regulatory Authority of India (TRAI) is trying to counter with an app that it wants all phone makers to install. The app has been available on the Android store since 2016, but Apple in March told Reuters that TRAI’s app “as envisioned violates the privacy policy of the App Store.”

The new version of its iPhone operating system, expected in autumn, will allow many of the app’s functions but not fully automatic spam filtering as that functionality could open the door to Apple users being tracked by third parties, Apple said in a letter to regulators. TRAI, however, last month notified Indian telecom firms it could give them six months notice to “derecognize” devices from their networks if the devices do not support anti-spam apps that are approved by the government.

In the letter, dated June 18 and responding to a draft of the proposed notification, Apple asked for the clause about derecognition to be dropped. “We look forward to working with TRAI to address the issue of unsolicited commercial communications, while simultaneously ensuring that we fully honor our commitment to protect the privacy and security of our users,” Apple’s head of public policy in India, Kulin Sanghvi, wrote in the letter which was seen by Reuters.

The Indian Cellular Association has also come out in opposition to the regulator’s move. Asked by Reuters to respond to Apple’s request to drop the derecognition threat, TRAI Chairman R.S. Sharma said the notification could not be quashed or challenged by writing a letter. “The most appropriate way to challenge this is in court,” he said.