A method and system for the purchase and activation of services on a wireless device are provided. The method and system include the use of an airtime card with a near field communication tag with a unique identifier code used to improve a user's experience and ease of activation/provisioning of services for the wireless device. In some aspects, the unique identifier may be generated during the activation and purchase of the wireless service and it is not required that the unique identifier code be recorded in a backend system of the wireless provider prior to activation. The services to be purchased and activated may include at least one of the following: out of the box activation, device upgrades, device reactivations, wireless number changes, wireless number porting, and the addition or purchasing of services including airtime, data, and/or SMS enrollments or data content.