Storage
HERE’S WHERE TO GET details about the storage on your phone and SD card.

The first section, “SD card,” gives details about the storage on the SD card. It has these listings, which mirror the ones in the Internal storage area:
Total space. Shows the total amount of storage space on your SD card.
Available space. Shows you how much space you’ve got left on your SD card.
Mount SD card. If you haven’t yet installed an SD card, put the card in the phone, get here, and tap this so you can use the card.
Unmount SD card. If you’ve already installed an SD card and need to remove your SD card for any reason, tap this before removing the card.
Format SD card. If you’re installing a new SD card, or if your existing one gets corrupted for some reason, tap this to format it. Keep in mind that when you format an SD card, you erase all of its contents.
The next section, “USB storage,” gives details about the USB storage built into the phone. It has these three listings:
Total space. Shows the total amount of space on your Galaxy S II’s built-in storage.
Available space. Shows you how much space you’ve got left on your builtin storage.
Format USB storage. If you’ve got a problem reading or storing data, your USB storage may need to be reformatted. Tap this button to do it, but be aware it will erase everything in it.
The final section, “Device memory,” has a single listing:
Available space. Shows you ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access