To check the network signal quality on Android, you just need a few taps in your phone’s settings, as follows:
1] On your Android device, open Settings and scroll down to the bottom.
2] Click on About Phone and select Status.
3] On the following screen, tap Network, and you’ll be able to see signal strength for the SIM card operators on your device. It’ll comprise of two numbers- dBm and ASU.
On iPhone, you can use iOS’s hidden Field Test menu to check your phone’s network signal strength, using the steps below:
1] On your iPhone, open the Phone app and dial *3001#12345#*. Make sure that WiFi is turned off.
2] Once you dial the above code, the Field Test menu will appear on the screen.
3] Now, select LTE and tap ‘Serving Cell Meas.’
4] Here, rsrp0 denotes the signal strength from your primary tower, i.e., the closest one to your location. Whereas, rsrp1 shows the signal strength from the next nearest unit.