Quote by b.c.
"it seems if your iPad
was online and located by Find my iPhone
, then goes offline - your last location is remembered (for how long, I'm not clear). Again, I just tested this - after disabling my iPad's network connection and relaunching Find My iPhone
, after several minutes of searching it fails to connect, shows the red dot, but still shows the last location on the map and how many minutes it's been since last located (now about 30min in my test). Maybe the last location will be lost
after a longer period being offline, I've never checked that..."
Find My iPhone and iPad. - MacRumors Forums
Red Dot Now for iPhone, iPod touch, and iPad on the iTunes App Store
This usually appears as a small red, blue, green, or black spot on the screen.
= How to do an iPad LCD Repair | Everything About iPhone