March has been quite a successful month for Oppo. The company boasts it has taken the first spot in offline sales in China thanks to the soaring interest for the F1 Plus (R9 in China). The data is gathered by independent research company Sino MR.The analysis shows that the company sold 180,000 units on the first day of sales (March 24). Just four days later, the number of Oppo R9 phones sold was