realme Book does not support Fn hot key switching. The system disables the Fn lock function by default. To use the special function with the icon printed on each key, please directly press the function key; to use the traditional F1-F12 key, press the Fn key+（F1~F12）Key.
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Article Reference
Official Realme documented guide #2038699
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Related Topics
#switch Fn key function#disable Fn lock#Fn function hot key#enable/disable media keys on keyboard#Fn key+（F1~F12）Key
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