I'm sad that I can't connect to wifi. How can I solve the problem of certification failure?

If the phone can't connect to the wireless network, try the following common situations:

1. If you can connect before, you can't connect now:

1) Close the wireless network search attempt again;

2) Check whether the entered wireless network password is correct.

2. If you can't connect or connect to the public wireless network for the first time:

Confirm whether other devices in the same wireless network are connected normally and whether the wireless network has set connection restrictions.

3. If you can't connect to the wireless network with a Chinese name:

Due to equipment compatibility problems, some wireless networks with Chinese names or special symbols may not be able to connect. It is suggested that the wireless network name be changed to English.

4. If the search is not available, report an error, timeout, etc. ：

Please check whether the router connection is normal (unable to connect to the cat), turn off the phone and the router and restart before trying to connect.

5. If all the above operations are invalid, it is recommended to back up important data (contacts, text messages, photos, etc.). ) and try to restore the factory settings.

If the problem still exists, please take the purchase invoice, maintenance card and machine to the mobile phone service center for inspection.