Doing so will remotely log you out of the session you picked, graying out your news feed and spawning a "You must log in to continue" pop-up window.
Post updates and photos while you're offline
You're stuck in, say, the New York subway without wireless access. You can still post random thoughts or even photos using the mobile Facebook app.
Tap the Status button, then write an update and (if you'd like) attach an image from your camera roll.
When you tap Post, the Facebook app will queue up your status update and upload it the moment your handset goes back online.
Bonus tip: The Android version of the Facebook app will also let you "like" items in your news feed while you're offline. As with any queued-up posts, your likes will get synced once your device goes online again.
Crop, add text, and put stickies on your photos
Give that photo you're about to post on Facebook a little extra punch with the Facebook app's on-board image editing tools.
Once you attach a photo to a post, you'll see little editing buttons pop up near the bottom of the image: three on the Android app, and a single button that reveals a set of additional options for iOS.
Both the Android and iOS versions of Facebook let you add captions directly onto the image, perfect for creating an on-the-go, viral-ready meme.
You can also crop the photo or add "stickies"--you know, smiley faces, sad faces, silly faces, you name it.
Last but not least, the iOS version of Facebook boasts a series of Instagram-like filters. Just swipe in from the right side of the screen to preview each filter one at a time, or tap the "Filters" tab to see all the filters at once.
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