...when activated. Can deactivate itself. A young mobile phone company,about to engage in a marketing campaign called BOGOF(buy one get one free). Needs a software that would be embeded in the free mobile phone. This would stop anyother network operator's sim being inserted in the mobile handset, apart from the recommended operator. Also this software would be capable of de-activating itself after a period of time. The software should be able to inform the recommended network operator when its been activated.