Is it illegal to harass by SMS or phone?

Telephone harassment violates the Law on Public Security Administration Punishment under certain circumstances. Offenders who repeatedly send obscene, insulting, threatening or other information to interfere with the normal life of others will be detained for up to five days or fined up to 500 yuan; If the circumstances are serious, they shall be detained for not less than five days but not more than ten days, and may also be fined not more than 500 yuan.

legal ground

Forty-second "People's Republic of China (PRC) Public Security Management Punishment Law"

One of the following acts shall be detained for not more than five days or fined not more than five hundred yuan; If the circumstances are serious, they shall be detained for more than five days and less than ten days, and may be fined up to five hundred yuan:

(1) writing threatening letters or threatening the personal safety of others by other means;

(2) publicly insulting others or fabricating facts to slander others;

(3) fabricating facts and falsely accusing others in an attempt to subject others to criminal investigation or public security administration punishment;

(4) Threatening, insulting, beating or retaliating against witnesses and their close relatives;

(5) sending obscene, insulting, threatening or other information for many times to interfere with the normal life of others;

(six) voyeurism, sneak shots, eavesdropping, spreading the privacy of others.