To resolve the network error you are encountering when trying to log into Favily, follow these steps:

1. Check Your Internet Connection:
- Ensure that your iPhone is connected to a reliable Wi-Fi network or cellular data. If you're currently on Wi-Fi, try switching to cellular data or vice versa to see if the issue persists. A weak or unstable connection can cause login problems - learn more.

2. Restart the App:
- Close the Favily app completely. On iOS, swipe up from the bottom of the screen (or double-click the home button) to see the app switcher, then swipe up on the Favily app to close it. Reopen the app and attempt to log in again.

3. Update the App:
- Check if there’s an available update for Favily in the App Store. Go to the App Store, tap on your profile icon at the top right, and scroll down to see if Favily has any available updates. If so, install them.

4. Restart Your iPhone:
- Sometimes, a simple restart can resolve connectivity issues. Hold down the power button and either volume button until the "slide to power off" slider appears. Swipe to power off your phone, then turn it back on.

5. Reset Network Settings:
- If the problem continues, reset your network settings. Go to Settings > General > Reset > Reset Network Settings. Be aware that this will erase saved Wi-Fi passwords, so you’ll need to reconnect to your networks afterward.

6. Check Apple System Status:
- Visit the Apple System Status page to check if there are any ongoing issues with services that Favily depends on, which might be causing the network error. Sometimes server outages can affect login capabilities - learn more.

7. Reinstall the App:
- If none of the above steps work, try uninstalling and reinstalling the Favily app. Press and hold the app icon until the menu appears, select “Remove App,” then go to the App Store to reinstall it.

By following these steps, you should be able to troubleshoot and resolve the network error. If the issue persists, consider reaching out to Favily’s support for further assistance.