On Thu, 16 Feb 2017 01:52:24 +0000 (UTC), Stijn De Jong
wrote:

02 Network Signal Info, version 3.63.01:
http://i.cubeupload.com/2zK8Ys.jpg
https://play.google.com/store/apps/d...android.telnet

I use the Pro version:
https://play.google.com/store/apps/details?id=de.android.telnet2
Mostly, I just need a fast responding analog signal strength indicator
for aligning antennas and testing nanocellular base stations.

Q: Which app do you use on iOS or Android to figure out all the cellular
towers and signal strengths of the cellular signal (CDMA or GSM) in your
area?

I've only tested a few such apps, but I don't recall seeing any that
did that. What the apps do is query the cell phone part of the
smartphone for cellular status information. I don't believe that apps
cannot control the cell phone and have it scan the neighborhood for
other cell sites. However, I'm not a programmer and might have this
wrong.

This app looks like it might do what you want:
https://play.google.com/store/apps/details?id=com.parizene.netmonitor
See the "Limitations" section. It seems that if the cell phone
section doesn't display neighboring cells, then the app also can't
display them. I don't have time right now to try it.

Q: Does that app show you *all* the towers that your phone can see
(or does it only show the one tower that your phone is connected to)?

Nope. Just one tower.

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558