How do I check how much memory my phone has and how much memory is being used?

In Settings, tap Memory to see how much memory is available and how your phone's memory has been used. You can also find out how individual apps are using memory.

1. Tap Memory used by apps to find out the memory usage for apps.
2. Tap or Duration, and then choose the period of time you want to see.
3. Tap > Sort by max use to see the peak memory usage for apps in the list.
4. Tap the name of an app to see details about its memory usage.