Open the Control Center (or go the Settings app).

Note that it may not work on every phone however. The Field Test menu has had some variations on each iPhone version nevertheless, this mini-guide should work on most iOS systems. How to Find Precise dBm Readings on Your iPhone The field test method will differ depending on your operating system. There are two main ways to check cell signal strength: the field test method and cell signal apps.

-100 to -80 means your signal is below average.-65 to -50 means you have very good signal.-50 means outstanding signal (your phone is probably almost touching the cell tower).dBm readings will be between -50 dBm to -120 dBm, with –50 being full signal and –120 being a dead zone. They aren't one-sided and can't be tampered with by your phone manufacturer or carrier. Decibels measure AM/FM radio waves, which are excellent at traveling long distances, but are easily blocked and can become patchy.ĭBm interpretations are a consistent unit of measurement. Mobile signals are measured in decibels (dB) - a logarithmic unit - while signal strength is measured in decibel-milliwatts (dBm). Fortunately, there is a way of knowing the exact number of decibels (dB) you're getting, for a more precise reading. More bars do usually mean more signal, but there’s no real standard. It's totally arbitrary, and this is true for both 5G and 4G. One bar on AT&T could mean full bars on T-Mobile, which could be two bars on Verizon. That's because they vary, depending on the model of your phone and your cell phone carrier. The cell phone bars reading on your phone isn't reliable. Depending on what kind of phone you have, your smartphone itself can even provide more exact information about your signal strength, far more exact than bars. This kind of information is extremely important if you want to address your lousy cell reception with a cell phone signal booster. You can even find where your nearest cell tower.

Nevertheless, we can recommend some outstanding smartphone apps that can tell you precisely how good or bad your reception is.

Are there any apps out there that can boost your cell reception?

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