iphone5 7 1 2 system how to replace the signal with a negative number

If you set it to a number, the signal will become negative if it is very bad, and the method is as follows:

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

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

3. Then you will see that the dotted signal grid is gone.

4. Start holding the top power key of your iPhone until the "Slide to power off" slider appears. Don't let go.

5. After the "slide to power off" slider appears, the power button will not be released and press and hold the home button at the same time.

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

7. The setting is successful, and the recovery dot icon can be switched by simply clicking on the number.

The first step is to enter [**].

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

Step 3, press and hold your iPhone's on/off key (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.

Click [Choose as satisfactory answer] If you have any questions, click to continue asking questions and do not add additional questions.

The method is as follows: 1. Enter "*3001 *" (the string in quotation marks) on the dial-up keypad <>

2. At this time, it will automatically jump to another page, if there is no jump, just press to call.

3. Press the power on and off button until the word sliding to shut down appears, then release it.

4. Press the home button, it will automatically return to the desktop, at this time the signal grid has been set to represent the signal of the local operator, the larger the number in front of the negative sign (-), the stronger the signal, and the weaker the vice versa.

How to set it back:

1. Enter "*3001" on the dialpad

2. After waiting for another page to load, click Home to return to the desktop.

Call *3001* and then turn the lock screen on again, just click on the signal bar, no jailbreak required.

Negative values require a jailbreak to get them.

Here's how the iPhone 6 Plus turns the signal to a negative number:

1) Enter *3001 * on the dialpad, and then press the call button, the iOS built-in application Field Test will be launched, and you can check the exact value of the signal.

2) Press and hold the power key of your iPhone until the "Slide to power off" slider appears.

3) Press and hold the home button until the power off slider disappears, and the phone will return to the home screen interface.

4) At this time, this signal strength value will always be displayed in the upper left corner of the iPhone screen, click to switch between the number and each.