The company expects the 2018 revenue growth in the smart hardware segment to be driven primarily by ASP expansion and, to a lesser extent, the number of phone units sold. The company expects CapEx to increase in 2018, as expanding infrastructure capacity for growth in both active user base and engagement. The company is not expecting the sales and marketing as a percentage of revenue to change significantly compared to 2017. Gross margin will continue to expand as revenue continue to grow, especially when the revenue growth is coming from advertising.