Since LG G2 doesn't support microSD card, you need to always keep an eye on the remaining storage. To see the available memory in the internal storage, and the memory details, do as follows on your G2:
1. Open Settings application and swipe to General tab
2. Tap Storage
3. Now, you can see Total Space, Available space, and the amount of space used for apps, pictures, videos, Audio, Downloads, Cached data, and Misc.
** Tip: To clear the Cached Files on LG G2, you just need to tap the Cached Data and confirm the process
Lean More LG G2 Tips and Tricks