After connecting to Wi-Fi, you will be prompted that the ip address is unavailable. It is suggested that you can check according to the following methods:

1, the router connection is set to static ip, and the mobile phone is generally connected by DHCP by default. You can reset the router, remove the connection mode of static ip, or contact the network administrator to obtain information such as IP address, gateway, network mask and main domain server to connect;

2. Compare and connect other Wi-Fi to avoid that the current Wi-Fi is abnormal. If the connection to other Wi-Fi is normal, you need to connect the network operator to repair the network;

3. When all Wi-Fi is connected, the prompt "ip address is unavailable" will appear. I suggest you download the firmware in official website and update it to the latest system.

If all the above methods fail, it is recommended to take your mobile phone, warranty card and invoice to the nearest OPPO customer service center for testing and processing.

This answer applies to all OPPO models.