So, you want to view your signal strength in numeric dbm on your slick EVO. Seems the Android OS will allow you to easily do this by pressing the menu button, going to settings, about phone, and status. For whatever reason, however, the status option is missing from this menu on the HTC EVO.
Here’s the workaround:
Dial ##debug# on your phone to get to the “Field Trial” menu, then choose the service you want to check the signal:
1X Engineering to view 1xRTT info
EVDO Engineering for 3G info
WiMAX Engineering for 4G info
Under each of these options there is a number for “RX Power”, that is the number you are looking for. The lower the better. IE: -60 good, -100 bad.
Thanks goes to this site for the info