| 摘要 |
A method of changing light emitted from a mobile phone. The mobile phone includes a circuit board, a plurality of buttons set on the circuit board forming a button area on the mobile phone, and a plurality of light sources set on the circuit board. The method includes providing a casing, adding fluorescent material onto the casing, positioning the casing with the fluorescent material on a side of the circuit board with the plurality of light sources, and triggering the plurality of light sources such that light passing through the casing is different from backlight originally emitted from the plurality of light sources.
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