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EMUI5.x:Open Settings > Apps > select the applications whose cache you wish to clear
> Storage > CLEAR CACHE.
EMUI8.x:Open Settings > Apps & notifications > Apps > select the applications whose
cache you wish to clear > Storage > CLEAR CACHE.
EMUI9.0:Open Settings > Apps > Apps > select the applications whose cache you wish
to clear > Storage > CLEAR CACHE.