Iphone cell tower test mode

[Kentucky]

Found this which is very interesting. This is a test mode to enter into the iPhone which will return all kinds of cell tower/ signal strength, and mnay many other parameters about the cell phone . Many of the answers are useful to only ATT in-house engineer type people but some are helpful and interesting even to the layman . !

Apple iPhone
In phone mode dial *3001#12345#* then press CALL.
The Field Test Screen will appear. Select "Cell Information."
Signal Strength is on the top line after RX.
Frequency follows FQ and is based
on the channel number (i.e. 100-200
is 800 MHz and 500-700
is 1900MHz). The
top line displays information about the tower you are using. The lines below
display info about your neighboring towers.
NOTE: Signal strength, measured in decibels (dB), is expressed as a negative number. On
certain phones, the number may show as positive in test mode. In such cases, convert it to
negative. For example, 60 dB is actually -60
dB. The higher the number, the stronger the signal.
Thus, -60 dB is a stronger signal than -75 dB

Don't know if this has ever been posted before but if so ...here it is again.

[ColsTiger]

Thanks for posting this again. I had forgotten about this little tool.

[z28black98]

Thanks for posting this again. I had forgotten about this little tool.


I get the message "error performing request, no network service"

which is odd because I have a full meter and I have been texting, getting phone calls all night.

[IphoneTony]

Thanks good find... Have not seen on this on here before..

[AntonChigurh]

I get the message "error performing request, no network service"

which is odd because I have a full meter and I have been texting, getting phone calls all night.

Same here.

[z28black98]

Same here.


damn I am an idiot. After reading the post again, I forgot to put a the star (*) at the end. It works for me now. My fault.