Download and install the trial over the air (requires data plan) http://www.greentechmobile.com/ota/BlinkBerryDemo.jad
BlinkBerry blinks the external LED backlight in different colors according to the signal strength returned from the phone. There are 6 possible signal strengths from 0 to 5. A signal strength of zero indicates no service.
The default configuration of the status light has the signal strength colors arranged according to the following
The colors are customizable to include any combination of the following colors:
You can also set the blink duration, the blink period, and Fade. Once suspended, Blinkberry runs in the background. Now you can know your signal strength without taking your phone out of the holster.
BlinkBerry's No Service Steady option is perfect for the road warrior. The
LED will stay on in the color selected for no service when No Service Steady is
on. With just a glance you will know whether or not you can make a call.