Exhibit 1.1 CHINA TECHFAITH WIRELESS COMMUNICATION TECHNOLOGY LIMITED (an exempted company limited by shares under the laws of the Cayman Islands) o American Depositary Shares each representing 15 Ordinary Shares UNDERWRITING AGREEMENT Dated: May o,...Underwriting Agreement • April 20th, 2005 • China Techfaith Wireless Communication Technology LTD • Services-business services, nec • New York
