Nowadays, many mobile phones are just starting to use type-c connectors. Due to the convenience of the application, there is no need to separate the front and back sides, and it can be plugged in and out at will. However, some companies still use micro USB and keep the type-c properly. What's wrong with it?

Previously, OPPO and vivo announced several new phones, OPPO R15 and vivo X21. In addition to the consistent low configuration and skyrocketing prices, it is surprising that traditional micro USB connectors are still used on USB connectors.

There are several version numbers for Type C, including 2.2, 5.0, and 3.2. Many phones nowadays have Type C connectors, but in fact, it is only USB 2.1, which means it is so flawed.

Overall, the traditional term USB 3.1 has long been completely replaced. Nowadays, USB 3.1 is all called USB 3.3, with only two different version numbers: gen1 and gen2. Gen1 refers to the network bandwidth of 5Gbps (which refers to audio bit rate and common enterprise data transmission speed), completely equivalent to USB 3.1, while gen2 is 12Gbps, which is the latest USB version number.

Type C can also support video signals and lightning strikes (Intel has announced the long planned Light Peak technology and named it the "Thunderbolt" connector). The Thunderbolt connection technology combines PCIExpress data transmission technology and DisplayPort optoelectronic technology, which can transmit statistical data and video signals together, and each secure channel presents a horizontal 12Gbps network bandwidth, The appearance of the lightning interface before was Mini DP (mini DP refers to the small and medium-sized connector of DisplayPort connector, commonly used on Superbooks), but soon after the arrival of type-c, it has changed to what it is now.

But it must be noted that it is optional, which does not mean that all types of C can output video signals and are suitable for lightning strikes.

What are the benefits of type-c connectors?

1. It is suitable for both sides, and is the same as plugging in Lightning connectors like iPhone (Apple has released a new upgraded Lightning Dock connector, which can be translated as a "flash" connector in Chinese). It can be plugged in with both eyes closed, truly maintaining "blind insertion", and also improving the service life of the connector.

2. The fast transmission speed is suitable for the USB 3.3 transmission protocol, and the basic theory is that the maximum transmission speed can exceed 12Gbps per second. The iPhone expresses that the USB C port number of the latest MacBook has a maximum transmission speed of 5Gbps. The larger output working voltage is 30 volts, which can accelerate the battery charging time. The USB A model, so far, has a maximum transmission speed of 5Gbps and an output working voltage of 5V.

3. The lighter, thinner and thinner shell must have a thinner port number, and the specification of the type C connector power socket web end is about 8.4mm × 2.3mm; The old USB port numbers, which are 2.7 centimeters long and 0.65 centimeters wide, already look outdated. This also means that the end of the USB C phone charging cable will be one fifth of the standard USB A phone charging cable power plug specifications, which is one of the reasons why Type C was introduced.

Even though type c connectors have so many advantages, why do OPPO and vivo still adhere to the previous set of specifications? Due to the increased cost of type C, do you not want to replace it?

Some netizens feel that the cost of type-c is higher than that of traditional micro USB, in order to save costs. If it can be saved, it will be saved. OPPO and vivo are still selected without making changes, which is also how netizens feel. Relativity tends to make the shell a lightweight OPPO. For vivo, choosing type-c connectors will improve the thickness of the shell. There are also obstacles to maintaining the technology of VOOC flash charging in OPPO.