After charging for so many years, should the data line be connected to the mobile phone or the plug first?

After charging for so many years, should the data line be connected to the mobile phone or the plug first?


Maybe when you charge your mobile phone, you don't care which one is connected first. Generally, you think of which one is connected first, and you don't find anything unusual. Regarding this issue, we must first understand a concept "surge", which means that the voltage exceeds the normal voltage in an instant. And when we connect the plug of the data cable to the socket, this kind of surge will occur, so if we connect the mobile phone first, then the plug will generate a surge. 
And this power surge is harmful to mobile phones. It may be difficult for us to find the effect of this hazard in a short time. This is because there are two kinds of harm from power surges. The damage to mobile phones is cumulative, and this direct The manifestation of sex is that it may shorten the service life of the mobile phone. Therefore, the correct connection method is to connect the plug first and then the mobile phone. However, there are many anti-surge plugs on the market that can effectively avoid the harm caused by the surge to the mobile phone.

In short, no matter whether your mobile phone charger has the function of anti-surge, it is not wrong to connect the plug first and then the mobile phone. This is a habit in our usual mobile phone use. In addition, after the mobile phone is fully charged, it is best to unplug the mobile phone first and then unplug it, which can reduce the harm caused by charging to the mobile phone!