Hi there! I understand your Canon EOS R8 camera is not being recognized by the Canon Camera Connect app on your iPhone running iOS 18.7, and you can't download pictures. Let’s work through this together.

To get started, could you tell me:

1. How are you connecting the camera to your iPhone? (Wi-Fi, Bluetooth, or USB cable)
2. Is the camera successfully pairing or connecting with the app but the photos don’t show up, or does the app fail to connect at all?
3. Have you checked that the camera’s firmware and Canon Camera Connect app are both updated to their latest versions?
4. Are any error messages appearing on your iPhone or camera during the connection attempt?

Meanwhile, here are some initial steps to try that usually fix connection and transfer issues with the EOS R8:

1. Check Network Connection on Camera:
- On the EOS R8, make sure Wi-Fi is enabled and it is broadcasting a hotspot (if you’re using Wi-Fi direct).
- Confirm the camera is in the correct mode to share images (sometimes called "Wi-Fi function" or "Send images to smartphone").

2. Reset Bluetooth and Wi-Fi on iPhone:
- Turn off Bluetooth and Wi-Fi on your iPhone and then turn them back on to ensure a fresh connection.
- Forget the camera’s network in iPhone Wi-Fi settings (if it appears) and reconnect.

3. Restart Devices:
- Power off and on both your camera and iPhone to clear any temporary software glitches.

4. Reinstall Canon Camera Connect App:
- Uninstall the app from your iPhone, restart the phone, then reinstall the latest version of Canon Camera Connect from the App Store.

5. Camera Firmware:
- Verify and update your EOS R8’s firmware to the latest version via Canon’s support website or app notifications. Firmware updates often fix connectivity bugs.

6. Image Format and Transfer Restrictions:
- If your photos are in RAW format, check if Canon Camera Connect supports transferring RAW on your device. Sometimes only JPEG previews transfer.
- Try transferring JPEG images or a few sample photos to test.

If you have tried some of these already, just let me know which ones; we can go deeper or look at advanced settings. Also, if you prefer, you can connect via USB cable using the Lightning-to-USB adapter, though wireless is usually more convenient once set up.

Does this help? If you provide a bit more detail on your connection method or any messages you’ve seen, I can guide you further!