The LG G2 is unable to access boot recovery to wipe cache.
The wipe cache partition option is not mapped to a hard key combination for the G2. However, devices that have 4.2.2 android version and above have the option to wipe all app cache from the Storage menu.
To wipe all app cache, follow these steps:
Note: When you enter Storage again, Cached data will appear. Your Cached data has been successfully cleared.
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