What rules must mobile content services follow?

All mobile content providers must follow specific rules and regulations in the ways that they promote, deliver and bill their content services.

These rules are of different natures (laws, regulations, administrative act, statutory body and any applicable industry standards and codes) and different from country to country.
Most of the countries have appointed at least one regulatory body that monitors and enforces the applicable rules. In most cases it is the national telecommunications regulator, or a foundation for the enforcement of the national Premium SMS code of conduct.

See also, I receive unwanted messages on my mobile phone. What can I do about it?

Contributed by