A wireless router is like an extended product that combines a simple wireless AP and a broadband router into one. It not only has all the functions of a simple wireless AP, such as support for DHCP clients, support for VPN, firewall, support for WEP encryption, etc., It also includes a network address translation (NAT) function to support network connection sharing for LAN users. It can realize the Internet connection sharing in the home wireless network, and realize the wireless shared access of ADSL, Cable modem and residential broadband. The wireless router can be directly connected to all the ADSL MODEM or CABLE MODEM connected to the Ethernet, or it can be re-connected through the switch/hub, broadband router and other LAN methods when in use. It has a built-in simple virtual dialing software that can store user names and passwords for dial-up Internet access, and can provide automatic dial-up functions for dial-up Internet access ADSL, CM, etc., without manual dialing or occupying a computer as a server. In addition, wireless routers generally have relatively more complete security protection functions.

The 4G router mainly embeds the wireless 4G module in the original router. First, the user uses a tariff card (USIM card) to plug in a 4G router and dial-up connection through the operator's 4G network WCDMA, TD-SCDMA, etc., to achieve data transmission, Internet access, etc. The router has WIFI function to realize shared Internet access. As long as the mobile phone, computer, psp has a wireless network card or with wifi function, it can access the Internet through a 4G wireless router, which provides great convenience for realizing wireless local area network sharing 4G wireless network. Some manufacturers also have wired broadband interfaces, so they can access the Internet normally without 4G. Through 4G wireless routers, broadband connections can be realized, reaching or exceeding the current network bandwidth of ADSL, and it has become very widespread in applications such as the Internet.