Baidu has been investing heavily to diversify away from its bread-and-butter search advertising business, which is less profitable on smartphones than on PCs, especially as there are more mobile internet users than PC users in China.
Advertisers typically pay less for ads on smartphones compared with computers.
Baidu said in June it would invest $3.2 billion in "online to offline" services where mobile internet users are linked to nearby offline services such as buying cinema tickets, booking taxis, getting restaurant deals as well as its maps and Baidu Wallet services.
CFO Jennifer Li called it a "solid" quarter, with mobile increasing its contribution. Total quarterly revenue rose to 18.38 billion yuan from 13.52 billion yuan.