There is a squeak sound when charging a Nokia phone

Hello, if it is a straight charger, the plug part will have a sound, but it will not be so loud, because the plug is divided into transformers, and the transformer itself will make a sound, if it is not very loud, it is normal, but if it is a meter away, it can still be heard, probably the charger is not used internally. Or already in a state of fatigue. It is recommended to replace, I hope it can help you [glutinous rice team serves you].

If it is determined that the data cable of your mobile phone charging has a squeaky sound, then the biggest possibility is that there is a small resistance between the positive and negative wires of the 4 wires in your data cable, which will increase the load of electricity after plugging in, and there will be a sound when the power supply is overloaded (in this case, it will not be charged, and the voltage will be pulled down).

Please replace your data cable, or it will not be detrimental to your power supply.

Try unplugging your phone from the cable and see if the sound goes away?

Try it and report it again, and then help you analyze.

You already know what the problem is, so let's change the cable. But before the problem is completely clear, it is recommended that you bring your mobile phone and charger to Nokia after-sales service to have a look.

Yes. There is no need to be overly nervous to have this sound, it is the sound of charger current. Normal.

I guess it's going to smoke soon...

The charging socket on your mobile phone is not in good contact, it is recommended to remove the debris, or ask a professional to change the socket for you, I hope your problem will be solved as soon as possible.

This may be a problem with the interface, if it is really a problem with the charger, then replace one, it is also a great benefit to your mobile phone battery, this situation will only shorten the battery life of the mobile phone, and cause burning! Wish!

You said you heard the sound of mechanical vibrations in the charger, right?

The charger you are talking about is actually a power adapter, a device that converts 220V AC to 5V DC, does not have the function of charging control, and the charging control is completed by the mobile phone, so the mobile phone is also a dock charger.

The power adapter is a switching power supply, the current is pulsating when working, the corresponding induced magnetic field will be generated around the pulse transformer, if the pulse transformer is not fixed firmly, mechanical vibration will occur, when the frequency of the vibration or their harmonics enter the range of 20-20kHz, it will become an audible sound.

When the internal structure changes due to ** and other reasons, the frequency of the resonance may be changed, so that the original audible sound cannot be heard. Generally speaking, these noises, other than affecting the quiet environment, are not much of a problem. If you find it annoying, apply some paint to the pulse transformer, which will improve.

1. Yes, as long as the standard output voltage and output current of Nokia's charger meet the charging requirements of Xiaomi mobile phones; If not, there may be problems such as unstable charging, failure to charge, and longer charging time.

2. Generally, the standard input voltage of Xiaomi mobile phone charging is 5V, and the input current is 1A or 2A (only mobile phone models that support fast charging), so when users use other chargers to charge Xiaomi mobile phones, they should pay attention to confirm the output voltage and output current of the charger to ensure that the input requirements are consistent with that of Xiaomi mobile phones.

There are input and output currents on the plugs, see it clearly, as long as it is the same as Xiaomi, it has little impact on the battery.

It doesn't matter if the output current is small, it's just that it takes longer to fully charge.

My charger was also very hot and buzzing.