How To Determine The Decibel Value Of Cellular Signals Using Your Cell Phone?

Cell Phone Booster
Cell Phone Booster
Cell Phone Booster
Cell Phone Booster

Cell phone booster is the most popular solution for signal issues that continue disrupting the quality of cellular communication failing its very purpose. In this world of digitalization, where the whole world is connected at lightning speeds, it is really hard to tolerate internet browsing that progresses like a sloth, breaking voice calls and texts that take a long time to be delivered.

Being a repeater that amplifies the available signals at a location, cell phone boosters cannot operate within a dead zone that has zero signal strength. Hence it is important to determine the signal strength at your location prior to buying a signal booster so that you can choose one of ideal power and install the antennas at the right location.

Testing Signal Strength In Decibels

Signal strength is often indicated by the signal bars on cell phones but the method has less precision when compared with the analysis of signal strength values in decibels. Here are the methods used to determine signal strength values for different phones.


  1. Open the dialer app.
  2. Press *3001#12345*
  3. The Field Test Mode opens up and you get the signal strength values in decibels in this feature.
  4. Press the Home button to exit the testing mode.

Android Phones           

Similar to the features in iPhones, Android phones allow the access to signal testing features by dialing some special codes that vary according the cell phone brand.

  • Samsung-*#*#197328640#*#* or *#0011#
  • HTC-*#*#7262626#*#*
  • Sony-*#*#*386#*#* or *#*#*585*0000#*#*

Even if the method doesn’t work, you need not worry because you can adopt other methods to determine the signal strengths that too are quick and easy.

The process might differ slightly according to the software layer used by the Android phone brands .

The general steps are given below.

  1. Turn off the automatic sleep function

Automatic sleep function is not that much of a trouble but seeing the screen go black, while you are checking the readings can be a bit frustrating.

  1. Access the settings icon
  2. Check the status section of the settings

You will find the signal strength option in the status section of your settings. Sometimes the option might be outside the status settings.

Locations that receive low strength cellular signals require higher power cellular signal booster because the amplification power of the booster has to make up for the low quality of cell phone reception.