| CPC G02B 27/0172 (2013.01) [G02B 6/262 (2013.01); G02B 26/0833 (2013.01); G09G 3/02 (2013.01); G09G 3/3406 (2013.01); H02J 7/0048 (2020.01); G02B 2027/0123 (2013.01); G02B 2027/0141 (2013.01); G02B 2027/0178 (2013.01); G09G 3/346 (2013.01); G09G 2330/023 (2013.01); G09G 2340/0407 (2013.01); G09G 2340/045 (2013.01)] | 20 Claims |

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1. A method applied to an electronic device and comprising:
displaying a first image of a first fields of view (FOV) when the electronic device is not connected to an external power supply device and when a battery level of the electronic device is greater than or equal to a first battery level;
displaying a second image of a second FOV when the electronic device is connected to the external power supply device, wherein the second FOV is greater than or equal to the first FOV; and
displaying a third image of a third FOV when the electronic device is not connected to the external power supply device and when the battery level of the electronic device is less than the first battery level, wherein the third FOV is less than the first FOV.
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