FAQ

The tower location is way off/in the middle of the water/on top of a remote mountain
Tower locations are based purely on calculations. The reason that towers will show up over water is due to the fact that water usually doesn't contain...
Mon, 10 Apr, 2017 at 3:34 AM
A single cell is stretching for 5/10/15 km or more!
Unfortunately, not much can be done about this. Most phones will report the same Cell ID when a call is in progress. Likewise, some phones will get "st...
Mon, 10 Apr, 2017 at 3:34 AM
Why isn't the uplink/downlink frequency displayed when I map a region?
The frequency can only be retrieved with a BlackBerry device for certain. Certain Windows Mobile devices (Qualcomm based HTC devices) and all Windows Phone ...
Fri, 6 Jul, 2018 at 4:21 PM
What are "low accuracy" towers?
Low accuracy towers are towers whose location cannot be accurately predicted given the uploaded data. Therefore, they revert to a more simple algorithm of ...
Mon, 10 Apr, 2017 at 3:35 AM
What is "Estimated Frequency" or "Estimated bandwidth"?
Some networks have a known sector number to frequency band mapping. If it is known, it will be displayed on the site. Check here if your provider already su...
Thu, 20 Apr, 2017 at 10:15 AM
What is "Android 4.2 CellID Support"? Why does it work on my devices?
In Android 4.2, the CellID API was re-written to ensure data is updated somewhat atomically to avoid bad data. Unforunately, some manufacturers, notably Sa...
Mon, 10 Apr, 2017 at 3:40 AM
Why don't you have an iOS app?
Apple doesn't allow apps to use the network info API.
Mon, 10 Apr, 2017 at 5:35 AM
What phone is best to use CellMapper on?
Generally, generic Qualcomm based phones are best. See the Tested_Phones page for details. Also we recommended phones what have latest Android 7+ for ...
Thu, 20 Apr, 2017 at 9:52 AM
Why do some countries have more than one option on the web site? Why do some providers have more than one option?
There are many networks in different countries and multiple technologies they use within that network. The site allows you to dig into these in detail. Th...
Mon, 10 Apr, 2017 at 5:38 AM
How long does it take for my data to appear?
It may take anywhere from a few minutes to a few days, and up to a week, for data to be generated.
Mon, 10 Apr, 2017 at 5:38 AM