What s the use of changing the signal to digital on the iPhone

In fact, there is no practical use for iPhone to change the signal to digital, if you change it to digital, you can check the signal strength;

Digital Signal Method:

The first step is to enter [**].

The second step is to type *3001* on the dialpad and press the [Call] button, the iOS built-in app FieldTest will be launched, and the exact value of the signal strength will also appear in the upper left corner.

Step 3, Press and hold the on/on key of your iPhone (i.e., the top power key) until the "Slide to power off" slider appears.

Step 4, Finally, press and hold the Home button until the power off slider disappears, the phone will return to the home screen interface, Step 5, at this time, the signal strength value will always be displayed in the upper left corner of the iPhone screen, you can also click on it to switch between the number and the signal bar.

1 Open the keypad, enter *3001* on the keypad, and click [Dial].

2 Then press and hold the [Power Off Button] until the [Slide Power Off] appears, and then press the [Home] button until the [Sliding Power Off] disappears.

3 If you want to change the number back to the dot mode, also enter *3001 * on the dial pad, click to dial to enter the [field test], at this time, you click on the signal sign in the upper left corner with your hand, it will switch the number and dot mode arbitrarily, and then exit directly.

There is no practical use, if you change it to a number, you can check the signal strength: between -40 and -50 means near the base station; Between -50 and -60 indicates a good signal; Between -60 and -70 indicates a good signal; Between -70 and -80 indicates a slightly weaker signal; Between -80 and -90 indicates a weak signal; Below -90 can basically communicate, and below -100 it is difficult to ensure the quality of communication.

Changing the signal to digital can give you a better idea of the current signal situation of your phone.

1. Click to dial, enter *3001*, and then press Call. This will take you to the field test screen. At this point, the original dot in the upper left corner has become a number.

2. Press and hold the power off button until "Swipe to power off" appears.

3. Press and hold the home button to bring the phone back to the home screen.

4. At this time, the signal strength in the upper left corner of the iPhone screen will always display the number. Tap to switch between the two modes at will.

The steps to turn your iPhone's signal into digital are as follows:

The first step is to enter [**].

The second step is to type *3001* on the dialpad, and then press the [Call] button, and the iOS built-in app Field Test will be launched, and the exact value of the signal strength will appear in the upper left corner.

Step 3: Press and hold the iPhone's ON key (i.e., the top power source key) until the "Slide to power off" slider appears.

Step 4, finally press and hold the home button until the power off slider disappears, the phone will return to the home screen interface, step 5, at this time, the signal strength value will always be displayed in the upper left corner of the iPhone screen, you can also click on it to switch between numbers and signal bars.

Signal Test The first step is to enter "**".

Step 2, type *3001* on the keypad and press the "Call" button.

At this point, the iOS built-in app "Field Test" is launched, and the exact value of the signal strength appears in the upper left corner.

Step 3, press and hold the iPhone's on/off key (i.e., the top power key) until "Slide to Power Off" appears

Step 4, Finally, press and hold the Home button until the power off slider disappears and your iPhone will come back to the home screen interface.

Step 5, at this time, the upper left corner of the iPhone screen will display the value of the signal strength at this time, we can click on it to switch between the number and the signal grid.

Regarding the "value" of this signal, the lower the signal, the worse the signal. Let me give you a few references: the signal between -40 and 50 is near the base station; -50-60 signal is very good; -60-70 signal is considered good; -70-80 is a slightly weaker signal; -80-90 is a weak signal; -90 or less is the basic communication state.

If it's -100, it's recommended.

To turn your iPhone signal into numbers, you can do it by following these steps:

1. Dial pad input: *3001 * point call.

2. The phone will automatically switch to the field test startup page, and the signal strength value will be displayed in the upper left corner.

3. Start pressing and holding the top power button of your iPhone until the "Slide to Power Off" slider appears, and when the "Slide to Power Off" slider appears, the power button will not let go and press and hold the Home button at the same time.

4. Press and hold the two buttons at the same time for about 5 seconds, the phone will restart, and then the signal will become a number.

Here's how a signal turns into a number:

1 Open the dialing interface, enter *3001* and press the dial key, then an interface will pop up, you will see that the signal display in the upper left corner is a number, click it with your hand to switch between the two display modes.

2 Press and hold the power button of the phone, and when the prompt slides to shut down, then press and hold the home button of the phone until the screen returns to the desktop of the phone.

3 Press and hold the Home button until you return to the Home screen, then you can see if the signal in the upper left corner of the screen has become a number.

Dial, enter *3001*, dial out, the number appears, and then press and hold the shutdown button, the shutdown screen appears, at this time, let go of the shutdown button, keep holding down the home button, and wait until the screen restores the desktop, the number has always appeared.

In general, between -40 and -50 is near the base station;

-50-60 signal is very good;

-60-70 signal is considered good;

-70-80 is a slightly weaker signal;

-80-90 is a weak signal;

-90 or less is the basic communication state.

100, it is recommended to sleep at night or turn on the airplane mode, otherwise it will consume power and radiate a lot!

1. Tap "**" on the standby page of the phone, enter *3001* in the dial pad, and then press the "Call" button. 2. Then you will enter the signal digital display interface, at this time, long press the "power on" button of the mobile phone, and then press and hold the "home" button of the mobile phone after the prompt of "slide to turn off" appears, so that it will return to the standby page, at this time the signal is no longer a small dot, but a digital display. In this way, the iPhone 5S signal display number is also completed.

Do it in your order, you can't change the numbers.

1. Enter the **dialing interface:

2. Enter *3001 * and then click the [Call] button 3, at this time, the iOS built-in application Field Test has been opened, and the signal dot in the upper left corner of the screen has also become a digital display of the exact value.

4. Press and hold the power on and off button until the shutdown slider interface appears.

5.Press and hold the [Home] button at the bottom of the screen without letting go, the system will return to the desktop, and the dot signal will be changed to display the exact signal value digitally. Tap a number to switch between the dot and the number at will.

Note: If you can't switch to the dot display when you tap a number on the desktop, you need to go to a random software, then tap the number to switch, and then return to the desktop to switch at will. ）

6. If you need to switch back to permanent dot display from dot number, then re-enter the [**] interface, and then enter *3001 * in the dialing interface to start the iOS built-in app Field Test, and then press the [Home] button at the bottom of the screen to return to the desktop.

1.The first step is to go to the dialing screen, type in *3001*, and press the dial key.

2.Then you will enter this interface, which is actually a field test application built into Apple's iOS 10 system, which is used for field testing.

3.Then press the lock screen button until the sliding shutdown interface appears, and you can release it after this sliding shutdown screen appears.

4.Then implement the next step, press and hold the home button, and after a few seconds, the iPhone will automatically pop back to the main interface, and at this time, the mobile phone signal column displays the digital signal.

How to operate: 1. Click "**" from the main interface of iPhone to enter the "Dial Pad" interface.

2. Enter "*3001*" from the keypad and click the "Call" button.

3. At this time, it will enter the field test, and the signal status indicator bar in the upper left corner has become a number, which is a negative number, the closer to 0, the stronger the signal.

4. At this time, if you press the home button directly to return to the main interface, the signal indication will return to the bar display. Press and hold the power button on the Field Test interface, and the interface of "Mobility is coming to power off" will appear, and then press and hold the home button until you return to the main interface, and then release the home button. The signal indicator in the upper left corner is now always digital.

5. If you want to go back to the original status bar display, repeat the steps 1-3 above, and then press the home button directly to return to the main interface.

First enter 3001 in the dialing interface, then call, then [Field Test] will appear, then press and hold the power button until the [Slide to Power Off] state appears, press the [Home button] to return to the desktop, then your previous [Signal Number] will become [Signal Grid].

If you still want to change back to a number, repeat the above steps until you "press and hold" the [Home button] until the [Swipe to Power Off] interface disappears!

Dial pad input: *3001 * point call.

The phone will automatically switch to the field test startup page, and the signal strength value will be displayed in the upper left corner, so don't go back at this time.

Press and hold the top power key on your iPhone until the "Slide to power off" slider appears. Don't let go.

When the "Slide to power off" slider appears, the power button is not released and the home button is pressed and held at the same time.

Press and hold the two buttons at the same time for about 5 seconds, and the phone will restart. OK.

Step 1: Open the dialing interface, enter *3001* and press the dial key, then an interface will pop up, you will see that the signal display in the upper left corner is a number, click it with your hand and it will switch between the two display modes.

Step 2: Then we will enter such an interface as shown in the figure below, at this time we press and hold the power button of the phone, and when the prompt appears to slide to shut down, we will press and hold the home button of the phone again, and press until the screen returns to the desktop of the phone.

Step 3: Press and hold the home button until you return to the home screen, then it's OK, the signal in the upper left corner of the screen is not a number, it's very simple.

The original icon becomes a number.

1.Enter the dialing interface, enter *3001*, and press "Call".

2.Launch the Field Test screen (see the third image I gave at the beginning).

3.At this point, your signal has become a number, but if you exit now, it will become the original signal icon again.

4.Next, press the power switch button on the top of your phone's power supply until "Move the slider to power off" (don't turn it off).

5.At this time, please release the power off button, now press and hold the "home" button until the "move slider to power off" disappears At the same time, the field test interface exits, and the modification is successful.

6.Once you've made the changes, tap the value in the top left corner with your finger to switch between the number and signal icons.

The first step is to enter [**].

The second step is to type *3001* on the dialpad and press the [Call] button, the iOS built-in app FieldTest will be launched, and the exact value of the signal strength will also appear in the upper left corner.

Step 3, Press and hold the on/on key of your iPhone (i.e., the top power key) until the "Slide to power off" slider appears.

Step 4: Finally, press and hold the home button until the power off slider disappears, and the phone will return to the home screen interface.

Step 5: This signal strength value will always be displayed in the upper left corner of the iPhone screen, and you can also tap on it to switch between the number and the signal bar.

If you want to switch back to the previous signal, just repeat the first.

One, two, four steps will do. Don't press the shutdown button, after the field test is started, press and hold the home button to the desktop, and the signal will change back to the default style.

1. First of all, let's take a look at the signal pattern under normal conditions.

The picture shows a 4-grid signal, and the signal is relatively good.

2. Open the call interface and enter the icon **:*3001* through the dialpad. Then tap Call.

3. Enter this interface and leave it alone. Next, press and hold the power off button until the power off prompt appears.

4. Press and hold the home button until you return to the main interface.