The bumpy history of cell phone charging cables

Once upon a time, we burst into tears because our mobile phone was out of power but forgot to bring the charging cable. Once upon a time, we were furious because our mobile phone ran out of battery and forgot to bring a charging cable when we went out. After struggling to borrow it, we found that our Symbian interface had been eliminated!

Start the Smartphone Era

In 1973, former Motorola executive Martin Cooper dialed the first human mobile phone with a mobile phone weighing 1.13 kilograms. Even though this mobile phone weighs as much as two cups of milk tea, the call time it can sustain is only ten minutes. As the saying goes, charge for two hours and talk for five minutes.

In the decades since then, there has been a history of rapid development of mobile phones, and many kinds of smartphone systems have appeared, such as Symbian OS, Andriod OS, Windows Phone, iOS, Blackberry, etc. However, with the continuous advancement of the long river of history, some are exactly the same year, and some have been eliminated.

But we needn't be sentimental, as technological developments seem to never stop. Look around, our mobile phones are getting smaller and smarter at the same time. The charging time is getting shorter and shorter, and the use time under high power consumption is getting longer and longer, making our life more convenient and work more efficient.

Today, perhaps the most common mobile phone systems that accompany us in our daily lives are Android and iOS. But today, Xiang Ning doesn't want to talk about the problems of the smartphone system but wants to share with you the mobile phone charging cables that are often entangled or brought wrong.

A variety of mobile phone charging cables

Maybe everyone has such a question, why does the interface of our mobile phone charging cable keep changing? Why don't mobile phones with iOS system and Android systems use the same interface charger?

In fact, the development of mobile phone charging lines closely follows the development of smartphones. The change in the charging line is also due to the increase in people's demand for various functions such as the function of the mobile phone charging line and the charging speed. The current mobile phone charging cable is no longer a little white with simple charging functions but has gradually grown into an old fritter with various information transmission functions.

And why can't the charging interface of the iOS system and Andriod system be unified? The main reason for this problem maybe there is no uniform standard! Moreover, there is no unified standard anyway, so why bother to spend money to buy someone else's patent?

Going back to the interface of the smartphone charging cable, the most commonly used ones are the Micro USB interface, USB Type C interface, and Lightning interface; before that, there were Mini USB and Dock interfaces. Below, we will introduce you to several common mobile phones charging cables. Here we also need to clarify a concept, that is, these names are only the definition of the shape of the interface, and the functions that can be realized will be discussed separately.

Mini USB port

Mini USB is divided into Type A, Type B, and Type AB. Among them, the 5Pin Mini B interface can be said to be the most common. The connector was favored because of its anti-mismating feature that only one side can be inserted correctly, although the device was later considered a nuisance. Coupled with its relatively small size, it widely appeared on early mobile phones, card readers, MP3, digital cameras, and mobile hard drives. The upper limit of the charging power of this interface is about 20 W, and the charging speed and efficiency are relatively average. In the end, the Mini USB gradually lost its market because of its low performance. Now, except for an old mobile hard disk, Xiangning can no longer find a use for this charging cable.

Micro USB port

The emergence of Micro USB is due to the new USB standard born in 2007, and before the emergence of Type C, almost all Android phones adopted this interface. Back then, Nokia mobile phones used this kind of data cable to transmit information. Of course, the charging port is still a small round hole. This interface is a portable version of the USB 2.0 standard, and it can only be inserted on one side. Compared with Mini USB, Micro USB is smaller, has a longer service life, and also supports OTG function, compatible with USB1.1 (low speed: 1.5Mb / s, full speed: 12Mb / s) and USB 2.0 (high speed: 480Mb / s ), the transmission rate is also greatly improved. However, this charging interface cannot withstand large currents, and the maximum charging power is about 40W. Therefore, as the demand for fast charging increases, Micro USB is also destined to come to an end.

USB Type-C interface

Micro USB is already very good, so why is USB Type C so fierce that it has the potential to completely replace Micro USB? This is because, with the development of technology, Micro USB not only cannot meet the demand for fast charging of large-capacity batteries but also has difficulty keeping up with the data transfer rate of USB 3.1. To put it bluntly, Micro USB is OUT in terms of technology and usability. The USB Type C interface can implement the USB 3.1 standard, and the fastest transmission speed can reach almost 40GB/s; of course, there are Type C of USB 3.0, Type C of Thunderbolt3, etc... Moreover, it can be plugged in both front and back, so you can use it It is also more convenient; the charging power limit of this line can reach 100W, which brings us closer and closer to the small goal of "charging for five minutes and talking for two hours". Therefore, at present, USB Type C has gradually become the mainstream interface type on mobile devices.

Dock interface

Do you remember? From the birth of the first iPhone in 2007 to the most classic iPhone 4s in the history of the iPhone, just 4 years are enough for the 30-pin Dock interface to be engraved on the stone tablet of history forever. This kind of interface is relatively large in size and relatively low in transmission efficiency. Therefore, since the release of the iPhone5 in 2012, Apple has launched a new 16-pin Lightning interface.

Lightning interface

The Lightning interface is still a special data cable for Apple devices designed by the maverick Apple itself. They have also applied for new utility patents and appearance patents. It is currently the mainstream interface for Apple mobile phones. This kind of interface is not only small and cute, but another advantage is that the front and back can be plugged in at will, which is very convenient to use. Moreover, this double-sided pluggable design was realized one step ahead of USB Type C. Until now, Apple's mobile phones have been using the Lightning interface for nearly 9 years.

The charging power of the Lightning interface charging cable is not very high. After all, the upper limit of fast charging supported by Apple mobile phones is about 20W. As for the data transmission speed of the Lightning interface, it is almost still in the era of USB 2.0, and the specific speed is about 25MB-35MB/s, which is comparable to USB Type C.

However, careful friends should also find that as early as iPad Pro 2018, MacBookPro, and other products, Apple adopted the Type-C interface and abandoned its own Lightning interface. The reason should be the issue of the right to use the patented technology. In fact, it is almost self-evident who is fragrant.

Throughout the history of the development of mobile phone charging cables, just like smart devices such as mobile phones and computers, they have grown from scratch, from large to small, from simple functions to smart multi-purpose, all of which are engraved with the development of the Internet era. Finally, let us imagine, where will the mobile phone charging cable go in the future?

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