What should I do if the iphone4s fails to flash and can t turn on

Use iTunes to flash your computer.

1.Install iTunes. Launch iTunes.

2.Plug in your iPhone, press and hold Power (power on and off button) and Home (circle button below) for 10 seconds, wait for your iPhone to go black (as a rule of thumb, probably after a second after the black screen), release the Power button, and keep holding it.

Until iTunes recognizes your iPhone.

3.At this time, Windows will first discover some new hardware and drive it by itself, and a prompt box will pop up after iTunes automatically recognizes the iPhone. "iTunes has detected an iPhone stuck in recovery mode, you have to restore this iPhone and then use it with iTunes.

At this point, click OK.

5.Until a cable connection screen is displayed on your iPhone, iTunes prompts that the firmware restoration is complete.

If multiple attempts are unsuccessful, it is recommended to seek after-sales help, and do not blindly disassemble the phone, otherwise the warranty will be terminated.

If your iPhone 14 screen black screen won't turn on, here are a few things you can try to fix the problem:

Check the battery level:If the battery is too low, the Shono Pai can cause the iPhone 14 to not turn on properly. Try charging your phone with the original charger for a while before trying to turn it on.

Force Restart:Press and hold the Volume + and ON keys on your iPhone 14 until the Apple logo appears. If the problem is due to a software issue, this method may resolve the issue.

Recovery Mode:If a force restart doesn't fix the problem, you can try to enter recovery mode. You need to connect your iPhone 14 to your computer, then press and hold "Volume-" and "On" until the "Connect to Computer" interface appears, then you can choose to restore your iPhone 14.

This method will erase all data and restore your iPhone 14 to its factory settings, so be sure to back up your data.

As long as the mobile phone is driven successfully...The bricks will be painted....The key is to find the right bag....Take the tutorial seriously.

You can change the original data cable.

The phone has entered recovery mode Secure way to deal with it;

At the same time, install the phone's home button (the one in the middle circle) + power off button for 10 seconds left, if it is not an infinite recovery mode, it can be turned on normally.

If the above method doesn't work, you can only enter the DFU mode and then use the tool to protect the data (so that none of the things in the machine will be lost) for strong brushing.

If you don't know how to operate, continue to reply, remember to adopt!!

Reasons and solutions for mobile phone not turning on:

1. The boot line is not normal: use the external power supply to supply power to the mobile phone, use the electric meter to detect whether the indication has changed, if there is no change, it is likely that the boot line is broken or the boot button is not in good contact.

2. The power supply circuit of the battery is abnormal: use the external interface to supply power to the mobile phone, see if it returns to normal when it is turned on, and if it is normal, it is determined that the power supply circuit of the mobile phone is abnormal.

3. The IC of the mobile phone power supply is abnormal: test the test point of the peripheral circuit of the power supply IC according to the circuit principle diagram to see whether the test value is normal.

4. The system clock and reset of the mobile phone are abnormal: you can use the dual total oscilloscope to detect the CPU power supply of the mobile phone and check whether the waveform in the reset is correct.

5. Problems with logic circuits: that is, faults in the circuit version of mobile phones, which can generally be solved by repair welding.

6. Software conflict: The installed software does not match the system of the mobile phone, which may also cause the mobile phone to fail to boot, you can connect the mobile phone to the computer to delete the program.

Reinstall the system with iTunes Flash the system to reinstall the system.

The jailbroken machine cannot be recovered, and will be white.

Find another one to help you re-brush it.

Make sure if the battery is out of power and if the charging cable is damaged

Is there any response to holding down the power button and the home button for 10 seconds, and then releasing the power button and holding home?

Lines, systems and other problems, to the after-sales solution, here to ask is not as fast as to the after-sales service, do not need to spend money.

Troubleshooting hardware and software failures is generally caused by automatic shutdown and failure to turn on. As long as you charge it continuously for about 15 minutes and turn it on again, you can be successful.

Basic parameters: 1Main screen size: inches.

2.Main screen resolution: 960x640 pixels.

3.Rear camera: 8 million pixels.

4.Front camera: 300,000 pixels.

5.Battery capacity: 1420mAh.

6.Battery type: Non-removable battery.

Dual-core. 8.RAM: 512MB.