When the device leaves the range of a known Wi-Fi network, the Wi-Fi icon in the status bar does not disappear, and the device fails to switch to LTE/5G, resulting in a loss of internet connectivity. Turning off Wi-Fi via Settings or Control Center does not resolve the issue either. Only restarting the device fixes the problem. Network settings and general settings have already been reset. The issue occurs on an iPhone 15 Pro and an iPhone 17 Pro. Is there a solution? Apple Support has suggested the troubleshooting steps mentioned above as well as an exchange of the iPhone 17 Pro.