When Apple updates its system, what should I do if I say that you are no longer connected to the Internet?

1. Since we can't connect to the Internet, the first thing we have to do is to check the network. It is suggested that when upgrading ios9. 1, you should use Wifi wireless network as much as possible, because updating requires downloading a large number of files, and using mobile phone network may lead to insufficient traffic, resulting in network disconnection and verification failure.

2. In addition, if you upgrade with Wifi network, the upgrade will fail. Check the Wifi connection and network for problems. If there is no problem, you can upgrade again, which can generally solve the problem. ?

Details are as follows:

1, check the label at the bottom of the router), log in to the web configuration interface of the current router, and the user name and password are admin by default.

2. Under the router's network settings, first find the router's WAN port setting option. Setting the "type" here correctly is the key to the problem. There are two commonly used: PPPoE and DHCP. Choose this according to your own situation. If it is ADSL dial-up Internet access at home, choose PPPoE. If residential broadband or hotels have direct network interfaces, please choose DHCP.

3. If it is DHCP, there is no need to make other settings, and the router will automatically obtain the corresponding network settings. If you choose PPPoE, you need to fill in the correct user name and password, which are provided by network service providers, such as China Telecom. If you forget your password, you can call 10000 for manual consultation.

4. Next, check the LAN port settings of the router. In fact, the settings of different brands are similar. The most important thing is to turn on the DHCP function, so as to ensure that the router can assign IP addresses to devices when they access LAN ports or connect to wifi. The IP address range allocated by DHCP should be in the same network segment as the IP address of the router, such as192.168.1.x.

5. Finally, check the security settings of the router. Check whether some security policies that restrict MAC or IP address connections or corresponding speed-limiting policies are turned on. If so, please turn it off, otherwise only devices with specific MAC or IP addresses can connect.