For users who want to upgrade, it is necessary to pay special attention, because Apple officially closed the system verification channel of iOS 11.3.1.
In fact, Apple's shutdown of the iOS 11.3.1 system verification channel is also an inevitable thing. As iOS 11 heavy update iOS 11.3 version update, its main problem is that those third-party replacement iPhone 8 screen, because the screen touch firmware is not Update to Apple, so I can't use it after changing the screen.
Currently, the beta version of iOS 11.4 and the beta version of iOS 12 are in progress, so users who like toss can still toss.
It is worth mentioning that the iOS 12 public beta should also be released soon.
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The RJ-45 interface can be used to connect the RJ-45 connector. It is suitable for the network constructed by twisted pair. This port is the most common port, which is generally provided by Ethernet hub. The number of hubs we usually talk about is the number of RJ-45 ports. The RJ-45 port of the hub can be directly connected to terminal devices such as computers and network printers, and can also be connected with other hub equipment and routers such as switches and hubs.
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