Exhibit 8.1

SUBSIDIARIES* OF THE REGISTRANT

We conduct substantially all of our operations through the following subsidiaries in China:

• Techfaith Wireless Communication Technology (Beijing) Limited, a PRC company;

• One Net Entertainment Limited, a PRC company;

• Techfaith Wireless Communication Technology (Shanghai) Limited, a PRC company;

• Techfaith Wireless Communication Technology (Hangzhou) Limited, a PRC company;

• Techfaith Intelligent Handset Technology (Hong Kong) Limited, a Hong Kong company;

• Tecface Communication Technology (Beijing) Limited, a PRC company; and

• 17fox Technology (Shenyang) Co. Limited, a 83.3% owned PRC company in China.

* Insignificant subsidiaries are omitted.