If you cannot connect Wi Fi, please check as follows1. Confirm that the location permission and location service have been opened2. Confirm that the mobile phone is connected to the 2 4GHz band network3. Confirm that the current Wi-Fi is not a public authentication network4. Confirm that the Wi-Fi name and password meet the requirements5. Confirm that the router does not turn on advanced settings such as name hiding6. The device enters the networking mode7. Confirm that the current network is in good condition8. Number of router connected devices9. Other router settings