Furthermore, our market share of mobile service revenue remained flat, evidencing our success at maintaining our market prominence.
On slide 7, you can see mobile VAS revenue growth rate after normalizing the effect of a temporary price discount, demonstrating our success at maintaining our growth momentum and competitiveness. This temporary discount, which involves subscribers whose mobile data usage per month is less than or equal than 1 gigabyte being given a 20% discount, will last until December of this year.
Mobile data network quality remains our focus. We would like to ensure we maintain our leading edge in terms of network quality. Our construction and capacity expansion of base station is on track. By the end of this year, we plan to have 4,000 HSPA+ base stations to provide more capacity in hot spots in order to effectively relieve traffic congestion. In addition, we are continuing to install Wi-Fi APs to offload the traffic from mobile networks, and we expect to accumulate 30,000 public Wi-Fi APs by the end of this year.
Moving to slide 8, let’s return to mobile business. As mobile competition is becoming increasingly fierce, we plan to supplement existing strategies by offering popular high-end smartphones as well as mid-and low-tier models in response to customer demand and to provide attractive value added services. Please see the next slide for the various models we offer.On slide 9, due to the continued popularity of smartphones, mobile Internet and the mobile data usage continue to increase. At the end of last year, we had 1.5 million mobile Internet subscribers, representing strong growth momentum of 85.4% year-over-year. We expect to add 700,000 mobile Internet subscribers by the end of this year, representing 46.6% year-over-year growth. Our smartphone penetration rate had reached 23% in terms of our postpaid customer base at the end of 2011. Read the rest of this transcript for free on seekingalpha.com