The 12331 number, which also has trained staff available to field food and drug safety-related questions, was also used for more than 100,000 tip-offs about illegal activities, of which two-thirds were subsequently successfully verified.
Shanghai citizens called the hotline last year with 91,378 complaints and questions, with staff responding to all of them, according to officials in charge of the scheme. Overall, 97.4% of all complaints and questions were resolved over that period, they added.
A new plan for rewarding people who call in with reports has been in place since February this year that increased the number of categories under which callers can receive rewards from nine to 30.
So far, over 3,400 rewards worth nearly 2.4m yuan have been paid by the Shanghai food and drug authorities.