Is it possible to view detailed GSM information on my Android phone? I'm trying to find such an app, but I can't, which leads me to suspect that it's not possible, either because of software or hardware limitations. What I'd like to see is a list of cell towers that my phone can reach (both from my carrier and other carriers); signal strengths from each; perhaps an option to lock on to a specific tower or forbid the use of some tower. And, generally, the more data available, the better. So - have I just missed the right app; is there no such thing out there (and I'm free to write the first one); or is such data simply unavailable and I can just give up?
There is this app called Antennas. It can't do everything you have asked for. But it can show you the tower you are connected to, the signal level, and other towers from you carrier that your phone can see/connect to and their signal level.


  Map the GSM/CDMA antennas in your neighborhood. This app monitors the
  GSM/CDMA cellular network connection; displays a map of approximate
  cellular antenna locations and their RF signal strength; and can log
  the data to a text or KML file.
  
  Does not work on Verizon 3G &amp; CDMA Support is limited by Android, not by the application CDMA requires Eclair Works
  best with 2G GSM. 3G/CDMA support is very limited.