1. Check or reset the settings of the wireless router, try wired broadband or replace a new wireless router (and the speed of WiFi is related to the distance from the router, the bandwidth of broadband and the number of people connected).

2. Enter Settings-Check whether the mobile phone upgrade is the latest version when the system is upgraded. If not, you can upgrade to the latest system and try to connect again.

Wi-Fi (pronounced as /wafa/, pronounced as /wifi/ in French), also known as "action hotspot" in Chinese, is a trademark of the manufacturer of the Wi-Fi alliance as a product brand certification, and is a wireless LAN technology created in the IEEE802. 1 1 standard.

Based on the close relationship between the two systems, Wi-Fi is often regarded as synonymous with IEEE 802. 1 1 standard. "Wi-Fi" is often written as "Wifi" or "WiFi", but they are not recognized by the Wi-Fi alliance.