On 2017-02-16, Stijn De Jong wrote:
Simple question:

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?

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)?

[...]

The one bad thing is that all these apps only show one cellular tower, even
though I know I have *two* microtowers inside my house, so, I think I need
to find a better app which will show *all* the cellular towers it sees.

To that end, I ask this scientific debugging question:

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?

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)?

I use OpenSignal on my Android, in the UK. It currently shows '100
nearby' cell towers on the first page (where your screenshot shows '0
nearby') and they are shown as points on the map within a mile or two of
where I am (in a large busy city). But I'm pretty sure that comes from
the OpenSignal server not from the phone's own hardware. Likewise the
information it claims to have about nearby WiFi hot spots. The phone
and Google work out where you are and OpenSignal send you the data they
have for that area.

So if OpenSignal have few users in your area they'll have little or
nothing to tell you about.

Your phone will be able to tell OpenSignal about the cell tower it is
currently connected to, and OpenSignal can add that to their database.
If the operator of that cell tower has made its location public,
OpenSignal will even be able to place it accurately on the map -
otherwise they'll have to estimate its position from the signal
information their users provide.

I don't know the other apps you mention.

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