To check network information and signal strength on an iPhone, you can use hidden codes and device settings. One of the most common methods is to use USSD codes, which allow you to view detailed information about your mobile network and signal strength.
Method 1: Hidden Code for Checking Signal and Network Info
1. Field Test Mode
- To access Field Test Mode, which shows detailed signal and network information, follow these steps:
- Open the Phone app.
- Enter the following code and press the call button:
- This code takes you to Field Test Mode, where you can see network details such as signal strength (in dBm), LTE bands, and other information.
2. Check Signal Strength in dBm
- In Field Test Mode, instead of the usual signal bars, the signal strength is displayed as a numeric value in dBm. A number closer to 0 indicates a stronger signal, while a negative number (such as -110 dBm) indicates a weaker signal.
- To exit Field Test Mode, simply close the Phone app and return to the home screen.
Method 2: Network Settings in iPhone
- You can also access network information through the following path:
- Open Settings.
- Go to Cellular or Mobile Data.
- Here, you can view details related to your mobile data and LTE/5G network.
Method 3: Using Third-Party Apps
- Some third-party apps like Network Cell Info Lite or OpenSignal are available on the App Store and can provide more detailed information about your signal and network.
These codes and methods will help you easily check the network information and signal strength on your iPhone.