iphone 11 pro intermittent disconnect from wireless carplay

If your iPhone isn't detected by CarPlay, make sure CarPlay isn't restricted. Go to Settings > Screen Time > Content & Privacy Restrictions. If Content & Privacy Restrictions is turned on, tap Allowed Apps and make sure CarPlay is enabled. Go to Settings > General > CarPlay, tap your car and then tap Forget This Car.

If you need help with CarPlay - Apple Support (IN)

If you're still having trouble with your car's audio system using CarPlay or Bluetooth, try the Aux cable. To get it fixed, there are two options:

1. Try using a different Lightning cable to connect your iPhone to the car's USB port (even though you're using wireless CarPlay, a faulty cable can sometimes interfere with Bluetooth).
   1. Search for accessories that have completed MFi certification. Once an accessory has completed MFi certification requirements and is reported to Apple as sold/distributed, it will be searchable in our public database of authorized Lightning, headset, charging, iAP-enabled, and Find My network-enabled accessories.
      1. https://mfi.apple.com/account/accessory-search
      2. Learn how to identify counterfeit or uncertified Lightning-based accessories.
2. Turn off Wi-Fi on your iPhone. While your friend's iPhone 15 Pro might not require it, some CarPlay systems might have a bug where Wi-Fi and Bluetooth connectivity conflict.
3. Check for Bluetooth interference. Move your phone to a different location in your car and see if the disconnects continue. Try turning off other Bluetooth devices you might have in the car.
4. This resets all your Wi-Fi networks, Bluetooth connections, and VPN settings. It might help if there's a corrupted setting causing the issue. Go to Settings > General > Reset > Reset Network Settings. Make sure you know your Wi-Fi passwords before performing this step. Reset Network Settings: Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings: Only network settings are removed.
   1. When you reset network settings, previously used networks and VPN settings that weren’t installed by a configuration profile or mobile device management (MDM) are removed. Wi-Fi is turned off and then back on, disconnecting you from any network you’re on. The Wi-Fi and Ask to Join Networks settings remain turned on.
   2. To remove VPN settings installed by a configuration profile, go to Settings > General > Profiles & Device Management, select the configuration profile, then tap Remove Profile. This also removes other settings and accounts provided by the profile. See Install or remove configuration profiles on iPhone in this guide.
   3. To remove network settings installed by MDM, go to Settings > General > Profiles & Device Management, select the management, then tap Remove Management. This also removes other settings and certificates provided by MDM. See “Mobile device management (MDM)” in the iOS Deployment Reference.
   4. Reset your Network Settings. Tap Settings > General > Reset > Reset Network Settings. This also resets Wi-Fi networks and passwords, cellular settings, and VPN and APN settings that you've used before.
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6. Technical support is available Monday through Friday from 8:00 AM PST to 4:30 PM PST at (800) 832-4647. If Tech Support is busy, please leave a message and you ... Support Tab

For wired CarPlay: Just plug your iPhone into the car's USB port using a Lightning cable.

For wireless CarPlay: While CarPlay uses WiFi to connect, it doesn't require an internet connection. You can still use most CarPlay features like music and maps without WiFi.