As I want to use my phone with static IP address, I apply Manual IP address setting. However, the setting is changed to Auto setting without any trigger. At that time, manual IP address which I have set is disappeared. It is reproducible several times a day. I have 4 devices and all has experiences of this phenomenon.
The phone is used just Wi-Fi and it doesn't have SIM card. Do you have any idea why this unintentional change occurs?
Device: iPhone14, iPhone SE 3rd iOS: 16 ,17
Regards.
For help with configuring your network settings, please post in the Apple Support Community. The Apple Developer Forums are for questions about APIs and features intended specifically for developers.