Issue with Wi-Fi Connection on iOS 18.0 iPhone 16 Series

Dear Apple Support Team,

I hope this message finds you well.

I am writing to report an issue I have encountered with Wi-Fi connectivity on my iPhone 16 series running iOS 18.0. The problem occurs as follows:

  1. When attempting to connect my iPhone 16 series (iOS 18.0) to a Wi-Fi network, the connection always fails.

  2. After this failed attempt, any other iPhone (not from the 16 series) running iOS 18.0 also fails to connect to the same Wi-Fi network.

  3. However, if I restart the Wi-Fi router, the non-iPhone 16 series devices can successfully connect to the Wi-Fi network.

To further investigate, I used Wireshark to monitor the network traffic. I observed that the iPhone sends a DHCP Discover message, but the Wi-Fi router does not respond with a DHCP Offer message.

Based on these observations, it appears that the issue is triggered by the iPhone 16 series running iOS 18.0, which causes the Wi-Fi router to malfunction and prevents other devices from connecting.

Additionally, I have tried all the steps listed on the following site, but the issue persists: https://support.apple.com/en-us/111786

Could you please investigate this issue and provide guidance on how to resolve it? If this is a known bug, is there a planned update to address it?

Thank you for your assistance. I look forward to your prompt response.

Best regards,

WJohn

Furthermore, the issue was not resolved even with the iPhone 16 series running iOS 18.1.

Furthermore, the issue was not resolved even with the iPhone 16 series running iOS 18.1.

Issue with Wi-Fi Connection on iOS 18.0 iPhone 16 Series
 
 
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