Go to the website of China National Intellectual Property Administration, China, and click "Patent Search Query";
2. Select "Patent Retrieval and Service System" in the newly popped-up page;
3. Enter the user name, password and verification code (if no one is registered), and click "Patent Search";
4. Select "General Search" in the pop-up page, enter "Mobile Phone" in the search box (for example), select the following "Invention Name" and click "Search";
5. Select "View File Details" on the search results page;
6. Select "Download Literature" on the literature information page to complete the download.