This is what Finance Minister Nirmala Sitharaman has to say on notices served to Xiaomi, Oppo and Vivo

The government is looking into cases of alleged tax evasion by Chinese mobile companies Oppo, Vivo India and Xiaomi and notices have been given to them, Finance Minister Nirmala Sitharaman informed Rajya Sabha on Tuesday.
The Department of Revenue Intelligence (DRI) has issued a notice to Oppo for total customs duty of Rs 4,389 crore and these are on the grounds of misdeclaration of certain goods leading to a short payment in customs duty, she said, adding, “duty evasion we think is about Rs 2,981 crore”.
“Undervaluation of imported goods for the purpose of payment of customs duty, that we think is an evasion of Rs 1,408 crore,” she said.