On the official websites of mobile operators you can get information about affiliate programs. For example, on your recommendation, your friend connects to the tariff plan, or connect a specific service. For this, the mobile operator charges you a fee (the form of free minutes packages, SMS, etc.) or you are awarded bonus points which can be spend on communication services. You will agree, a trifle, but nice. In the end, and the operator is satisfied with the progress of the tariff plan or services and you received a reward for participation in the affiliate program.
If your phone has Internet access via GPRS, you can try this kind of earnings as WAP surfing. Participation in the CERF projects is usually to visit the advertisers ' websites and perform simple tasks, like navigating to a specific link. Remuneration for participation in such projects shall be charged for each "click" the link; remuneration is usually expressed in small amounts or bonus points. However, here we must be careful, as there are many fraudulent projects, for participation in which you get nothing.
Owners of smartphones or PDAs have the ability to earn on mobile advertising. There are several companies specializing in mobile advertising. Participation in promotions of such companies is happening on the same scheme: a user installs on your phone a special program to run banner ads. The next step is filling out the questionnaire (special attention in the questionnaire given age, in order to determine the nature of advertising). After all the action of the program begins to run in automatic mode: once your phone receives a call, SMS or MMS, the phone screen is displayed the advertising banner. The reward in such actions shall be charged for each advertisement viewing.