iPhone has a secret menu that you can reach in a moment

Your iPhone is full of hidden gems, including a secret menu. This menu is only accessible by entering special codes and is known as Field Test mode. And no, you don’t have to have the latest iPhone 14 for it.

The hidden menu can show you a lot of practical information, such as how strong your iPhone’s signal really is. You can also see whether your calls are forwarded. The menu therefore gives you useful insights into your smartphone.

This is how you open the secret iPhone menu

To reach these secret functions, all you have to do is enter a series of numbers and letters through your iPhone’s dialing screen. Open your iPhone’s default phone app, where you can enter a number to call someone.

Do not enter a phone number here, but the following combination of characters: *3001#12345#* . Then tap the green button with the phone call in it. The secret menu will now open automatically. Under the different headings you will find a lot of useful information. Please note: which data you see exactly depends on your provider.

This is what the abbreviations mean

For example, open  Serving Cell Meas  under  LTE . Here are a lot of different abbreviations that can give you a good idea of ​​the signal strength of your iPhone. We will of course explain to you what the abbreviations mean.

For example, rsrp stands  for  reference signal received power . If this value changes, you’ll see it reflected in the signal strength bars in the top right corner of your iPhone. No dash equals -125, one dash equals -121 to -124, two dashes equals -106 to -120, three dashes equals -91 to -105, and four dashes equals -90 and above.

Then there is sinr or  signal-to-interference-noise ratio. With this value you can see the degree of interference from jammers in the area. There is also rsrq,  which stands for  reference signal received quality . This allows you to measure the quality of the signal.

RSSI or  received signal strength indicator also shows the signal strength, but does not take noise and any interference into account. When you’re done with the secret menu, you can easily exit Field Test mode by swiping up from the bottom of your screen.