Abstract: Methods and devices are provided for monitoring a battery to determine whether sufficient battery power remains to perform an event at a pre-scheduled time. A communications device includes a processor that receives instructions to perform the event at the pre-scheduled time, determines a first amount of time until the event is performed, detects an idle mode of the communications device, the idle mode consuming a minimum amount of power, calculates a second amount of time until the battery is depleted, the second amount of time being calculated while the communications device operates in the idle mode, determines whether the second amount of time is less than the first amount of time, activates a first alert if the second amount of time is less than the first amount of time while remaining in the idle mode, and performs an action prior to the pre-scheduled time while remaining in the idle mode.

Abstract: Methods and devices are provided for monitoring a battery to determine whether sufficient battery power remains to perform an event at a pre-scheduled time. A communications device includes a processor that receives instructions to perform the event at the pre-scheduled time, determines a first amount of time until the event is performed, detects an idle mode of the communications device, the idle mode consuming a minimum amount of power, calculates a second amount of time until the battery is depleted, the second amount of time being calculated while the communications device operates in the idle mode, determines whether the second amount of time is less than the first amount of time, activates a first alert if the second amount of time is less than the first amount of time while remaining in the idle mode, and performs an action prior to the pre-scheduled time while remaining in the idle mode.

Abstract: A mobile communications device may include a plurality of first input devices capable of passively collecting input data, a second input device(s) capable of collecting response data based upon a challenge, and a processor capable of determining a level of assurance (LOA) that possession of the mobile communications device has not changed based upon a statistical behavioral model and the passively received input data, and comparing the LOA with a security threshold. When the LOA is above the security threshold, the processor may be capable of performing a given mobile device operation without requiring response data from the second input device(s). When the LOA falls below the security threshold, the processor may be capable of generating the challenge, performing the given mobile device operation responsive to valid response data, and adding recent input data to the statistical behavioral model responsive to receipt of the valid response data.