What should I do if the baseband of Apple 8 mobile phone is broken?

1. What should I do if the mobile phone baseband is broken?

What should I do if the mobile phone baseband is broken? 1. What should I do if the 1.iphone baseband is broken?

The solution is as follows:

1. Download the latest version of itunes on the computer.

2. connect the iphone to itunes, turn off the iphone, press and hold the HOME key and the shutdown key for 1 seconds at the same time, release the shutdown key, and continue to press and hold the home key until you see the device recognized in the DFU state on the computer. when prompted by the computer, release the home key, select the restore option button on itunes, and click to confirm the recovery in the pop-up selection box.

3. Next, itunes will pop up a page to prompt that everything will be erased, and it will be verified and restored with the Apple server. When the verification and file extraction are completed, iTunes will automatically reinstall the downloaded firmware version for the iphone, and just restart the iphone after the installation is successful.

Baseband is the communication system of iPhone, which is used to control the program of mobile phone communication, telephone communication, WiFi wireless communication and Bluetooth communication. IPhone has related communication hardware, which needs to be driven by the communication system of baseband. With the working baseband, it can make phone calls, send and receive short messages and use 3G functions.

2. The base band of the mobile phone is broken. How can I update the system files of

base band

processing network communication? Baseband is a circuit in the mobile phone, which is responsible for the demodulation, descrambling, despreading and decoding of wireless signals in the mobile network, and transmits the finally decoded digital signals to the upper processing system for processing. Brushing the baseband can improve the quality of the signal, and different baseband can be imagined as different bands of FM radio.

If there is something wrong with the system file, you can try to solve it by brushing. If there is something wrong with the hardware, you can only repair it, and brushing won't help. The difference is that the method of brushing the phone is different, and it is generally necessary to brush the baseband by wire.

General steps of line brush:

Install the driver (64-bit and 32-bit);

open the brush tool;

import the line brush package;

connect the mobile phone to the computer and wait for the driver to be installed. After the driver is installed, it will automatically start to brush the machine;

wait for the phone to be refreshed, and then restart the phone (if pressing the power button doesn't respond, please unplug the battery. ）。

Note:

The line brushing steps and tools of each mobile phone are different. Please look for the specific course of line brushing.

There are risks in line brushing, so please be careful.

3. What if the mobile phone suddenly loses its network? Is the baseband broken?

If there is no signal on the mobile phone or an emergency call prompt is displayed on the screen, suggestions are as follows:

1. Turn off the phone, restart and try to search the network again.

2. if it is a dual-card mobile phone, please check whether the SIM card is activated: settings -SIM card manager -SIM1/SIM2- click the SIM card icon-slide to open (different models of mobile phones may operate in slightly different ways).

3. If there is still no signal, it is recommended to turn off the phone, take out the SIM card, wipe the SIM card chip with a rubber, and then reinstall it.

4. if it doesn't work, please try to change to another location to eliminate whether it is caused by poor signal coverage at the location.

5. try to change the network mode to 3G or 2G (automatic connection mode is not selected). Note: Some machines do not support changing the network mode.

6. try to replace another SIM card.

7. Update the mobile phone system version: Settings-About the mobile phone (about the device)-Download the update manually/automatically (software update/system update-update). Note: Please back up the data (contacts, information, pictures, etc.) in the device before upgrading.

if there is still no signal or emergency call after the above operation, please bring the purchase invoice, repair card and machine to the nearest service center for inspection.