We at Huaptec very often see the following situation: clients do not know what kind of frequency is used in their area. This information is very important as it helps to understand what problem with mobile signal exists. Knowing frequency and signal power, we can provide you with the best possible solution – propose you the booster that solves exactly your signal problem.
To know necessary information we advise you to make the following steps. They depend on what kind of mobile operating system you use.
Mobile OS Options:
- Option 1 – Service Mode menu for Android (Netmonitor)
- Option 1 – Service Mode menu for iOS
- Option 2 – Network Cell Info application for Android
Service Mode Menu for ANDROID
We need to know frequency and signal quality (in dBm). The shown channel gives (table 1) information about the frequency your phone operates on. DBm information (table 2) tells about quality of signal and approximate number of bars.
To get this information, use a hidden application that every phone has. It is called Netmonitor. Each model has its own unique code (you just dial it) to activate it.
It depends on version). Please, check details about your code in Internet.
For example, in our case this is
- *#0011#
- or *#*#4636#*#*,
- or *#*#197328640#*#*
Blue frame, RX value – shows the channel. Thus, you can easily understand what signal you receive.
Green frame, RI value shows signal quality from a base tower.
Then you can use this link https://www.cellmapper.net/arfcn?net to check which type of signal your mobile phone use or check it manually with the help of tables below.
Table 1. Frequency Distribution
This table helps to understand what frequency your phone receives. In the right column find channel (or its frames) that you see on your screen. The left column will show the exact frequency.
In this case it is clearly seen that it is UMTS 2100, because te value 10662 (see the picture) is from the interval Ch. 10562-10838 (line UMTS 2100).
Table 2. Signal and Its Quality
In this case it is -87 – not good, but not bad signal with approximate 3-4 bars (refer to the picture below).
Table 3. Signal Quality for Data
The screenshot for Samsung is the following
Service Mode Menu FOR iPHONE
We need to know frequency and signal quality (in dBm). The shown channel gives (table 1) information about the frequency your phone operates on. DBm information (table 2) tells about quality of signal and approximate number of bars.
Dial *3001#12345#*. This will open Field Test mode.
Choose GSM Cell Environment/GSM Cell Info/Neighboring Cells. Then you will see active GSM channels. Choose 0 (active channel).
Then you will see frequency and signal power. Don’t get confused when you see ARFCN (Absolute radio-frequency channel number) – it shows channel.
Make the same steps if you want to get information about 3G network, only choose UMTS Cell Environment/Neighbor Cells/UMTS set/choose 0 (active channel)
Table 1. Frequency Distribution
This table helps to understand what frequency your phone receives. In the right column find channel (or its frames) that you see on your screen. The left column will show the exact frequency.
This table helps to understand what frequency your phone receives. In the right column find channel (or its frames) that you see on your screen. The left column will show the exact frequency.
Table 2. Signal and Its Quality
Table 3. Signal Quality for Data
Network Cell Info application for Android
Network cell info is a very useful application that gives all necessary information about signal. Install it for Android (at the moment there is no app for iPhone).
All other important information you can find in the MANUAL.
Open the following link and download an application for mobile phone or tablet
https://play.google.com/store/apps/details?id=com.wilysis.cellinfolite
Here is a picture with explanation what some figures mean.
As you see, it’s simple enough to understand some information with our help. If you provide us with all necessary data, we can easily choose a booster for you that solves all your mobile signal problems. And feel free to ask us any questions. Just contact us.
