Static IP address of 255.255.255.255

I live in a house with a couple of housemates and I manage our internet connection. When looking in the admin panel of the router I saw that one device has set its IP mode to static and the console shows the IP address as 255.255.255.255. Judging by the host name it seems to be an iPhone.

Which seemed weird so I went to search about that, I did find that this IP address is reserved for broadcasting to all devices in the network but I couldn't find any information if I need that function, or what the impact of this static IP is.

Is there a reason to change that IP address to something in the usual range?

255.255.255.255 represents the local broadcast address, which is only propagated within the network. This broadcast data cannot cross routers by default. That is, it is a restricted broadcast address. For the local host, this address refers to all hosts in the network segment (same broadcast domain).

Therefore, this address cannot be used for communication. And it’s necessary for you to change its IP address to the normal range.

You can set the way the device gets IP to use DHCP. If you still want to use static configuration, make sure that the manually configured address is not the same as the IP of other devices in the wireless network.