In one sentence, describe what the following article is about:

It's a blue app with a white f.   It's just below About, Photos, and Friends. To take a new photo, tap the gray camera in the gray square in the upper-left corner of the screen.   The photo(s) have been uploaded to your friend's timeline.

Summary:
Open Facebook. Tap the search bar at the top of the screen. Type your friend's name and tap it when it appears. Scroll down and tap Share Photo. Tap the photo(s) you want to upload. Tap Done in the upper-right corner. Write a message to accompany the photo(s). Tap Post in the upper-right corner.