A system for managing a mobile telecommunications device having an associated telecommunications service plan, the system comprising a server coupled to a network, said server having a webpage accessible by a user with a user computer and a storage coupled to the network, a registration module on said server, said registration module being adapted to allow the user to register a mobile telecommunications device with the system, wherein the associated telecommunications service plan defines a service limit for a billing cycle; a mobile device plan module on said server, said mobile device plan module being adapted to receive information relating to the telecommunications service plan associated with the mobile telecommunications device; a threshold module on said server, said threshold module being adapted to allow a user to set at least one threshold for the mobile telecommunications device, the threshold associated with at least one telecommunications service provided under telecommunications service plan, the service selected from the group consisting of: voice minutes, or data usage, or text messages, or email, or a geographic location for the mobile device, or combinations thereof; and a rules module in communication with said server and being adapted to apply at least one rule to the at least one mobile telecommunications device when the at least one threshold is reached, wherein the least one rule is selected from the group consisting of: mobile device is restricted during selected time of day, or mobile device is restricted in specified location, mobile device is restricted when the at least one threshold relating to an amount of voice or data usage is reached for the telecommunications service plan, or combinations thereof, characterized in that the system further comprising: a notification module on said server, said notification module being adapted to generate a notification when the at least one threshold is reached, wherein the notification is a combination of: at least one graph, and an output including information for reducing costs associated with the mobile device; wherein the at least one graph depicts: information relating mobile device usage of the at least one telecommunications service, and a time period associated with the at least one telecommunications service plan; wherein the output is determined by an analysis module executing on said server, which analysis module is adapted to analyze the mobile device usage and to provide the output accessible by the user, the output indicative of at least one comparison between the telecommunications service plan and at least one of an alternative telecommunications service plan or an upgrade to the telecommunications service plan. a registration module on said server, said registration module being adapted to allow the user to register a mobile telecommunications device with the system, wherein the associated telecommunications service plan defines a service limit for a billing cycle; a mobile device plan module on said server, said mobile device plan module being adapted to receive information relating to the telecommunications service plan associated with the mobile telecommunications device; a threshold module on said server, said threshold module being adapted to allow a user to set at least one threshold for the mobile telecommunications device, the threshold associated with at least one telecommunications service provided under telecommunications service plan, the service selected from the group consisting of: voice minutes, or data usage, or text messages, or email, or a geographic location for the mobile device, or combinations thereof; and a rules module in communication with said server and being adapted to apply at least one rule to the at least one mobile telecommunications device when the at least one threshold is reached, wherein the least one rule is selected from the group consisting of: mobile device is restricted during selected time of day, or mobile device is restricted in specified location, mobile device is restricted when the at least one threshold relating to an amount of voice or data usage is reached for the telecommunications service plan, or combinations thereof, a notification module on said server, said notification module being adapted to generate a notification when the at least one threshold is reached, wherein the notification is a combination of: at least one graph, and an output including information for reducing costs associated with the mobile device; wherein the at least one graph depicts: information relating mobile device usage of the at least one telecommunications service, and a time period associated with the at least one telecommunications service plan; wherein the output is determined by an analysis module executing on said server, which analysis module is adapted to analyze the mobile device usage and to provide the output accessible by the user, the output indicative of at least one comparison between the telecommunications service plan and at least one of an alternative telecommunications service plan or an upgrade to the telecommunications service plan.