Thread: Which app do you use to scan/debug GSM/CDMA cellular tower signal strength?
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Jeff Liebermann Jeff Liebermann is offline
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Default Which app do you use to scan/debug GSM/CDMA cellular tower signal strength?
On Sun, 19 Feb 2017 17:18:40 +0000 (UTC), Stijn De Jong
wrote:

That first GPS location it probably gets from our GPS receivers, while the
second GPS (which it calls "NMAP") location is likely from a lookup
database.

It's MMAP, not NMAP. MMAP (Mobile Message Access Protocol) is a
protocol for sending SMS messages over the internet:
http://www.phonescoop.com/glossary/term.php?gid=269
https://yidonghan.wordpress.com/2008/01/02/mobile-message-access-protocolmmap-version-1-0/
http://xml.coverpages.org/SMS-MMAPv12a.pdf


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