Whether you’re struggling with dropped calls, slow data speeds, or poor connectivity, knowing how to check your cell phone signal strength is a vital step in troubleshooting. Poor signal strength can stem from network issues, device problems, or simply being in a signal-dead zone. In this guide, we’ll show you how to measure your cell signal strength accurately so you can determine the root of your connectivity problems.

1. Understanding Signal Strength: What the Numbers Mean

Your phone’s signal strength is often displayed as bars on the status bar, but this can be misleading. While it’s convenient, the number of bars doesn’t always reflect the actual strength of your connection. Instead, phones usually display a signal strength value in dBm (decibels milliwatts). A higher number (less negative) means a stronger signal, and a lower number (more negative) indicates a weaker one.

• -50 dBm to -60 dBm: Excellent signal

• -60 dBm to -70 dBm: Good signal

• -70 dBm to -85 dBm: Fair signal

• -85 dBm to -100 dBm: Poor signal

• Below -100 dBm: Very poor signal

Now, let’s explore how to check your signal strength more accurately.

2. Accessing the Secret Menu (Field Test Mode)

Both iPhones and Android phones have a built-in Field Test Mode that gives a precise signal reading in dBm.

For iPhones:

1. Open the Phone app and dial *3001#12345#* and press Call.

2. This opens the Field Test Mode. Look for the RSRP or Signal Strength in the data displayed. The value will be in dBm, and you can track how it changes as you move around.

For Android Phones:

1. Open the Phone app and dial *#*#4636#*#*.

2. Select Phone Information.

3. Under Signal Strength, you’ll see a number in dBm. Again, a higher (less negative) value is a stronger signal.

3. Using Network Signal Apps

For a more user-friendly experience, you can also use third-party apps to measure signal strength. Apps like OpenSignal, Network Cell Info, and Signal Strength can provide detailed data on not just your signal strength, but also the type of connection (4G, 5G, etc.) and its quality.

These apps also show you the exact location of cell towers, which can help you pinpoint areas where your connection is likely to be strongest.

4. Why Signal Strength Matters

Signal strength directly impacts your phone’s ability to make calls, send texts, and connect to the internet. A weak signal means the phone has to work harder to maintain a connection, which can lead to dropped calls, buffering video, and slow browsing speeds. By accurately measuring your signal strength, you can figure out whether your service provider is the issue or if you simply need to move to a better location.

5. Improving Signal Strength

If your signal strength is consistently poor, here are a few things you can try:

• Move to a different area: Go near a window, higher floor, or outdoors.

• Turn Airplane Mode on and off: This can help refresh your connection.

• Use Wi-Fi Calling: If available, this helps bypass cellular limitations.

By accurately checking your signal strength, you’re better equipped to understand your phone’s performance and troubleshoot connectivity issues effectively.