What should I do if the Kubi S3 can t turn on after the body heats up?

The causes, hazards, prevention and solutions of mobile phone battery heating are phenomena that we can often encounter in the use of mobile phones. Basically, 90% of mobile phones will have a very hot battery after a long call, and even the phone will get hot.

Causes of battery heating:

The power consumption of the mobile phone in standby is very small, that is to say, the equivalent load resistance of its battery is large, so the discharge current is very small, so the battery will not heat up, and the internal consumption of battery power is very small.

The power consumption of the mobile phone when it is ready to talk or use *** is very large, that is to say, the equivalent load resistance of its battery is small, and it is discharged with a high current when working. After the battery discharges a part of the electricity, the internal resistance increases, but the current required for the work of the mobile phone cannot be reduced, so a considerable part of the energy is consumed on the internal resistance of the battery, resulting in the battery heating, the discharge acceleration, and the battery use time is quickly shortened.

Dangers of mobile phone battery heating:

1 The battery of the mobile phone will heat up for a long time, which will cause the internal parts of the mobile phone to heat up, so that the mobile phone will restart or hang up the call**.

2 The heat of the mobile phone battery will increase the heat of the battery itself for a long time, if it is sealed (nokia and the like are not sealed, the battery is directly loaded into) the battery will make its internal air expand violently, resulting in the battery like an external protrusion, which will seriously make the battery**.

3 Prolonged heating of the mobile phone battery will accelerate the aging process of the mobile phone itself and shorten its lifespan.

Causes, hazards, prevention and solutions of mobile phone battery heating 2

Mobile phone battery heating prevention and solutions:

1. Prevention methods:

1 It is normal for the mobile phone to generate no more than 60 meters at normal room temperature, and the battery will not be damaged.

2 Do not use a high-current charger for too long, charging for too long will damage the battery and generate heat.

3. It is best to use the original or quality reputable products for the charger.

4 If you are not in a hurry to use it, it is recommended to charge it with a base charger (slow charging mode) to avoid heating the battery.

5 If you feel that the phone is a little hot when using the mobile phone or battery charging, if it is more than 60, immediately return to the standby state or change the battery, and unplug the charger immediately if it is charging.

2. Solution:

1 If the mobile phone battery has been charged and bulging, there is also a way to solve it. It is to use your fingers to find the gap of the battery first (the back of the mobile phone battery is close to the charging electrode of the mobile phone, and it is a little soft when pressed), and poke a small hole with the target to let the air inside run out.

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.

7. If it is a copycat mobile phone, then I estimate that it can't be turned on because the chip inside is burned, or some of the small parts inside are loose, but this situation will only appear if you drop it, the chip burns may be because you charge it for too long, burn the chip, if the battery has electricity, that is these aspects, if it is a brand-name mobile phone, such as Nokia, Motorola. These situations are rare, unless it is artificial, if it is a brand-name smartphone, and it is not used improperly, it is a software problem, it may be a system crash, or because of the mobile phone poisoning caused by software damage, generally this can only go to the maintenance office, however, I think the biggest possibility is caused by static electricity, it is recommended that you do not open the blind repair, or go to the maintenance office!