There are always yellow messages.

First, the reason why iphone6 always pops up advertising windows on the Internet: The wifi router may have been hijacked.

Secondly, if the router is hijacked, it will have the following hazards:

1, the data of users accessing the Internet through this router will pass through the server that may be a hacker, which will lead to online records being monitored and recorded, including mobile phones accessing the Internet through this hijacked router.

2. Online shopping and online payment may be maliciously directed at other websites. It further increases the risk of personal account disclosure.

3. The speed of surfing the Internet is slow, advertisements are implanted when browsing the webpage, and the visited website may be tampered with, and it may be transferred to the webpage that hangs the horse.

Thirdly, it is suggested to modify the router settings and operation methods:

1, first enter the router and check whether there is any DNS hijacked: open the browser and enter: http:/192.168.1in the address bar? (If the page can't be displayed, you can try to enter: http:/192.168.0.1). Based on the IP provided by your own route:

2. Enter the account password of the router: usually admin. (On the back of the router):

3. After logging in successfully, the router first opens the "Running Status" page to display the basic information of the router, and then checks the "WAN port status". The DNS server shown below has been hijacked, and Baidu is a Korean DNS server after inquiry.

4. In the "DHCP Service" option in the menu "DHCP Server" on the left, you can fill in that the primary DNS server is 8.8.8.8 and the standby DNS server is114.14.16. As shown in the figure below, click Save.

5. In order to prevent DNS from being hijacked again, it is necessary to modify the default password of the routing login account. This also improves the security of the home router. As shown in the figure below:

6. It is best to restart the router after the setup is completed, which will immediately disconnect the network. You can also check whether the settings are valid again through steps 1, 2 and 3.