By akademiotoelektronik, 25/02/2023

Your iPhone hides a secret menu, here's how to access it

You probably don't know it, but your iPhone contains some small secrets.In particular a menu discovered by users with the passage to iOS 14 then iOS 15.The latter, accessible via a code in the phone application, is actually an internal diagnostic application, called FtmineNal - known to those for which it is really useful, such as the “Field Test Mode”, in other words, it is a question of “field tests ”.

Among the many info delivered by the menu, it is possible to consult the power and the quality of your 4G or 5G signal in decibel-milliwatts, to locate the antenna that your smartphone has hung, as well as the frequency beaches currently used by yoursmartphone.What allow you to conduct the investigation if you, for example, you, your family and friends see problems of connectivity at home or in your neighborhood.

How to activate the “Field Test Mode” hidden menu on your iPhone

For that, it's very simple :

Votre iPhone cache un menu secret, voici comment y accéder

The internal application FTMINTALIA then opens immediately and gives you a view of a dashboard with undoubtedly the most useful data for a majority of users.But you can customize this screen with other metrics of your choice.To do this, just go to the list tab above right of the large white button with the name of your operator.

Navigate in the different inputs of the Rat, 5G, LTE and MISC sections, then touch the icon to the right of each parameter to add it to your dashboard if you are on iOS 15.

How to measure the power and quality of the signal via the “field test mode”

One of the most useful functions of this menu is the possibility of having specific figures on the strength and quality of your 4G/5G signal.A way to understand what is happening in the event of bad network connectivity, because the bars which are also displayed outside this menu are uncommon.And a reception of 3 bars out of 5 can prevent you, for example, from seeing a problem in the quality of signal reception.

To check this it's very simple: go to the list tab above right of the large white button with the name of your operator, then in Rat Go to Cell Info.The figure to the right of RSRP expressed in Milliwatts (DBM) decibels gives an indication of the quality of the reception.The closer of this number, the good the reception quality,.

To give you an idea, an RSRP of -80 dBm or higher (-70, -60, -50…) is considered a good quality signal.If the RSRP is below (-90, -100 dBM) then the 4G or 5G connectivity of your accommodation is clearly low or disturbed.You can use this to make several measures in your accommodation to give you, for example, a better idea of the quality of reception in your apartment according to the rooms.

Read also - iPhone - How to display the radar for secret precipitation of the weather app

Or to see connectivity problems in your neighborhood, which you can then communicate to your operator, supporting figures.Of course instead of noting interesting hand data, you can simply make a screenshot by pressing the ON/OFF and volume + button on your smartphone as soon as the data in question are displayed.The capture will then be kept in your photos.

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