Posted by Admin on February 24, 2017
Quick and easy instructions with video demonstration below showing how to put your Android or iOS Apple iPhone into Test Mode. You can put your phone into test mode for a precise signal reading instead of general bars or dots. This works for both iOS and Android devices. Here's how you do it.
Subscribe to YouTube Channel.
On an iPhone, open up the phone calling app showing numerical dial pad to make a phone call. Dial * 3 0 0 1 # 1 2 3 4 5 * and then press, "call" like you would call any phone number. This will automatically put your iPhone into field test mode. You will be able to see your signal level as a negative number where the dots or bars appeared in top left corner of the screen.
Here's another trick: If you want to keep the signal strength reading in decibel numbers as your signal indicator instead of the dots, hold down the power button for about five seconds, release it and then press the home button for about five seconds.
On Android devices, open "Settings". Then go to, "General". Then go to, "About Device". Tap on "Status" and you will see your signal strength right there. As far as we know, there isn't a way to replace your bars with the numbers on an Android device on a permanent basis. If you, or someone you know does know this, please let us know so we can add it here to help others that would like to see their signal strength in decibels on an Android.
Don't worry if your phone is showing a negative number, it will always be negative. It means that the closer that number gets to zero, the stronger the signal you have. For example, -100 and below is a very poor signal while -50 or better is a very strong signal - as if you were standing next to a cell tower!
Watch the video provided above, if you haven't already for more details and illustration on how to put your smart phone into test mode.