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Responsive to the current level dropping below a given power threshold, the associated action (s) are performed. Communi cation activity is also optimized in compliance with a service plan. A current service plan copy is maintained on the mobile device. Actions are specified to take when communication reaches given usage thresholds within a plan period. Com munication use is tracked, and compared with usage thresh olds. Responsive to communication reaching a threshold within a plan period, the associated action (s) are performed.