Sihai network

What's going on when you can't connect your phone to WiFi? What are the reasons why the phone can't

It's a depressing thing that mobile phones can't connect to WiFi. It's really annoying that people can't swim freely on the Internet. Especially for people who like to watch mobile phones when they go out, WiFi will have a sense of security at any time. What's the reason why mobile phones can't connect to WiFi?

Router failure

This is the most common problem. It is possible that the connection is stuck in a dead cycle for a while. The simplest solution is to plug in the power interface of the router and restart the router. This can solve the problem caused by 90% of the routers. Of course, there may be router hardware failure, which can only be sent for repair. Now the router price is 50-200 yuan, not expensive.

In addition, there may be router configuration problems, which depends on whether the router itself can connect to the network. If it can't connect to the network, it is necessary to reconfigure the router.

Multiple devices connected at the same time

Generally, this kind of problem occurs in the working environment, or in the coffee shop, shopping mall and other public places that provide free wifi. If you don't have permission to change the router settings, you can only try to avoid surfing the Internet in the peak period of networking, or connecting to the network in advance. If there is an IP conflict, IP allocation should be done to each connecting device in the router to avoid mutual influence.

In addition, there are some cases, such as the Tianyi router presented by China Telecom, which was forced to lock the routing function by the authorities. Therefore, if you want to use the Tianyi router for WiFi access, you must unlock it first.

Out of signal coverage

The wireless signal of the wireless router will be weakened by the external influence, the most direct is the distance. Generally, the ordinary router's signal beyond 10 meters will become very poor. Therefore, it is recommended to be as close to the signal source as possible when connecting WiFi to enhance the WiFi signal. In addition, if there is a media barrier between you and the wireless router, such as the wall, the signal will become very poor.

Wireless card failure

The WiFi signal received by mobile phone is realized by the wireless network card in mobile phone. Some mobile wireless network cards have been eliminated or seriously aged, which will lead to poor reception of WiFi signals, or even a call will lead to the disconnection of wireless network, which can only be repaired in the maintenance center.

Baseband or ROM problems

Baseband is responsible for the communication module, often a mobile phone has multiple baseband to choose from. If you brush an inappropriate baseband when you brush the ROM, it may cause your WiFi connection to be abnormal, even if the SMS cannot be sent out, and the phone cannot be called out. In addition, if the ROM itself is not perfect, there will be abnormal WiFi connection. For example, as soon as Android 4.1 was released, some of the computer users had swiped the test version of CM10 (a third-party ROM based on the 4.1 framework). As a result, WiFi could not be connected. Therefore, a more complete ROM must be swiped again to solve this problem.