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Generally, the mobile phone cannot be turned on (commonly known as bricking) mainly because the key files of the system are destroyed, resulting in the system not being able to boot to the launcher, which is of course also caused by the root of the mobile phone. If there is a mobile phone that can't be turned on (it has been stopped on the boot screen), then you have to "save the bricks", how to save it? At present, there are many, and what is provided here is the official method of saving bricks for Huawei mobile phones, after all, it is safer and more reliable.
Step 1. Install the mobile phone driver and hisuite tool in the computer, the current hisuite version number is the version, you can also go to the pollen club homepage**. Next, launch the HiSuite program.
The version version is released, remember this point in time, the new machine support is not, not very clear.
Step 2. When the phone is turned off, press the volume down button and the power button at the same time to turn it on, enter fastboot &rescue mode (rescue mode or brick rescue mode, call as you like), and connect the phone to the computer. In other cases, if the phone cannot be turned off after repeated restart, first connect the phone to the computer, press and hold the volume down, and then press and hold the power button for a long time, the phone will be turned off and restarted to enter rescue mode.
Step 3. Computer, HiSuite Tools Interface, My Tools, Phone Recovery. Once it shows that you have successfully entered the one-click repair mode, press Start.
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1. If the battery is too low, it is recommended to charge it first and then turn it on.
Second, if you can't turn on the machine again, it is recommended to go to the maintenance point of the accessory with the warranty card and the purchase certificate for maintenance. For the mobile phone to work normally, the power supply circuit should output a normal voltage to supply the load circuit. In the power supply circuit, the power supply IC is its core circuit, different varieties and models of mobile phones, the power supply mode is also different, some power supply circuits are supplied by several voltage regulators, such as Ericsson early series (before T18) mobile phones, some Samsung series mobile phones, etc.
Some have a power module directly supplied, such as Motorola series mobile phones, Nokia series mobile phones, etc. But in any case, if the power IC does not work properly, it may cause the phone to not turn on. For the power supply IC, the focus is to check the output of the logic supply voltage, 13MHz clock supply voltage, in the process of pressing the power button should be able to measure (not necessarily maintained), if not measured, in the power button, battery power supply is normal, indicating that the power supply IC is soldered and damaged.
At present, more and more power supply ICs are using BGA packages, which puts a great burden on measurement and maintenance, and can be tested at the test points of the peripheral circuits of the power supply IC against the circuit schematic diagram during measurement. If it is judged that the power supply IC is soldered or damaged, it needs to be replanted and replaced, which requires high operation skills and needs to be honed in practice.
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HUAWEI Phone Assistant HiSuite can do system recovery.
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1. The boot line is abnormal: use an 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, 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 schematic 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 to 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.
Please try to solve it as follows:
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