China's smartphone market will likely see a single-digit growth in 2015 after years of fast expansion, with total sales of 450 million, according to a latest industry consultancy report.

Research firm IDC expects smartphone sales in the largest market to grow 19.9 percent year-on-year in 2014, and 7.8 percent in 2015.

"As the market reaches its capacity, it will begin to shift from new-user driven to replacement driven. That's why a single-digit growth this year is not hard to understand," said Yan Zhanmeng, senior mobile analyst at IDC China in the report.

China is expected to sell one third of world's smartphones this year, with its sales tripling the US at the second place, according to the consultancy. However, 2015 will be its first year with a single-digit growth since 2009.

Let's take a look at the 10 major trends compiled by the IDC that will likely theme China's smartphone industry in 2015.

10. Sales channels vary among different cities

Purchasing cellphone online is becoming more and more common for customers in first- and second-tier cities, where e-commerce plays a dominant role in daily sales. However, cellphone shops run by local operators are still efficient to serve vast regions among fifth- and sixth- tier cities.

A college student and part-time shop attendant recommends cellphones to customers in Wen County, Henan province, July 24, 2014. [Photo/IC]