| CPC H04M 1/72448 (2021.01) [H04W 4/029 (2018.02); H04W 88/02 (2013.01)] | 20 Claims |

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1. An electronic device, comprising:
a controller configured to configure the electronic device to operate in each of a first mode, a second mode, and a third mode;
wherein:
a primary functionality and a communication functionality of the electronic device are enabled when the electronic device is configured to operate in the first mode, wherein the communication functionality of the electronic device when configured to operate in the first mode includes a transmission of periodic tracking signals at a first frequency and first power;
the primary functionality of the electronic device is disabled and the communication functionality of the electronic device is enabled when the electronic device is configured to operate in the second mode, wherein the communication functionality of the electronic device when configured to operate in the second mode includes a transmission of periodic tracking signals at the first frequency and the first power; and
the primary functionality and the communication functionality of the electronic device are both disabled until a trigger condition is satisfied when the electronic device is configured to operate in the third mode.
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