You can use a mobile phone to turn on the flashlight, illuminate the phone shell for several minutes, you can see the luminous effect, long exposure to strong light, luminous effect is better!
Step 1: Put the phone case in the light or Flashlight for a while.
Step 2: Let the phone shell surface of the material to absorb energy.
Step 3: Put the Phone case in the dark and you will see its luminous pattern.
need to absorb light to glow.
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