Can't find location

The flashing red 3G light usually means a hardware failure. However, it could also mean that an update was sent by AT&T and the MicroCell didn't reset itself properly and it thinks it's broken. You can try a hard reset by pushing in the reset button on the back and hold it for about 30 seconds. The MicroCell should be within 18" of a window and the view of the sky should be unobstructed. You can attach an extension GPS antenna if there is another window that has a clearer view of the sky. However, if the GPS light is solid green that means you have GPS lock and AT&T can verify your coordinates. The GPS coordinates have to match what is in the AT&T locational database based on your physical address which is the billing address for your wireless account. Sometimes if you live in a rural area AT&T's database doesn't match the GPS coordinates so it can' verify your location. However, that usually results in the 3G light blinking green because it can't properly activate the unit. See if the hard reset fixes the blinking red 3G light first. BTW, your interent speeds should be at least 3/0.5. Did you get the unit from AT&T or off of eBay?

Try the hard reset and see if that clears up the blinking red 3G light.