12303 is the telephone number for the National Bureau of Letters and Calls’ complaint acceptance and inquiry service.

12303 conducts mass satisfaction evaluation on the handling of non-confidential matters, signed letters, visits and online complaints accepted for the first time. The National Letters and Calls Bureau uses the 12303 SMS platform to provide letters and calls that are included in the evaluation scope and provide mobile phone numbers. The person automatically sends the query code. 12303 is the telephone number for the National Bureau of Letters and Calls’ petition acceptance and inquiry service.

For petition matters accepted by the National Bureau of Letters and Calls that are within the scope of evaluation, the petitioner can receive text messages actively pushed by the National Bureau of Letters and Calls 12303 platform through his or her reserved mobile phone number, obtain the query code in time, and register Log in to the National Bureau of Letters and Calls portal to check the evaluation. For those who do not leave a mobile phone number, the relevant petition department will print it and inform it.

Carry out mass satisfaction assessment on the handling of non-confidential, signed letters, visits and online complaints accepted for the first time. The National Bureau of Letters and Calls automatically sends the query code to the petitioner who includes the assessment scope and provides a mobile phone number through the 12303 SMS platform.

Petitioners can receive text messages actively pushed by the 12303 platform of the National Bureau of Letters and Calls through the reserved mobile phone number, obtain the query code in a timely manner, and log in to the portal website of the National Bureau of Letters and Calls through a registered account for query and evaluation. If no mobile phone number is left, the relevant petition department will print a notice.