Measuring cellular signal strength on iPhone is possible in the same way as on Samsung Galaxy phones. No professional skills or special equipment are required for this. Just run a few simple commands. After that, you can order a suitable repeater or call us for advice.
Measuring the signal strength on an iPhone is necessary for accurate diagnosis of missed calls, poor hearing and other such problems. The cause is not always an insufficient signal level. Therefore, you need to determine its level and the frequency range in which the nearest base station operates.
After measuring the signal, you can choose a mobile signal booster or contact us.

How check the 4G signal level on the iPhone

First, turn off Wi-Fi. Make sure your phone is in 4G mode (4G or LTE icon on your phone).
Dial the code *3001#12345#* and press the “Call” button. This will take you to the iPhone’s secret menu.

How to access sevice menu Iphone

1. LTE – Serving Cell Info (dll_freq): 6300 – number of the connected channel
2. LTE – Serving Cell Meas (Meas): -90 is the average signal level (dBm) of the active base station

Let’s move on to the second section.

Dashboard Iphone Secret Menu

Click on “Serving Cell Info”.

All Metrics Iphone Secret Menu

“req_band_ind 20 is the active band.

All Metrics Sevice Menu Iphone

If the channel number is in the range 1200-1949, then the phone is in LTE1800 mode. If the channel number is in the range 2750-3449, then the phone is in LTE2600 mode. If the channel number is in the range 6150-6449, then the phone is in LTE800 mode.

 

Standard
Generation Frequency ARFCN value (UARFCN or EARFСN)
GSM-900 2G 900 MHz (Band 8) 0.. 124
GSM-1800 2G 1800 MHz (Band 3) 512.. 885
UMTS-900 3G 900 MHz (Band 8) 2937… 3088
UMTS-2100 3G 2100 MHz (Band 1) 10562.. 10838
LTE-800 4G 800 MHz (Band 20) 6150.. 6449
LTE-1800 4G 1800 MHz (Band 3) 1200.. 1949
LTE2600 FDD * 4G 2600 MHz (Band 7) 2750.. 3449
LTE2600 TDD ** 4G 2600 MHz (Band 38) 37750.. 38249

* – FDD (Frequency Division Duplex) uses frequency division of the DL / UL channels, which allows to amplify this signal with an active amplifier (repeater).
** – TDD (Time Division Duplex) uses DL / UL time division multiplex, which makes it impossible to amplify this signal with an active amplifier (repeater).

We recommend amplifying the mobile signal with 4G Signal Repeaters from Rangeful.