Re: New iPhone and suddenly every email says "Your network settings prevent content from loading privately."
Seems you need to check what is different in your network settings ?
iPhone can only perform as it is set up to do, so there may be a setting that you can change if you want to.
See: Use Mail Privacy Protection on iPhone - Apple Support
Eg: says:
In the Mail app, turn on Mail Privacy Protection to make it harder for senders to learn about your Mail activity.
Mail Privacy Protection hides your IP address so senders can’t link it to your other online activity or determine your exact location. It also prevents senders from seeing if you’ve opened the email they sent you.
- Go to Settings
> Mail > Privacy Protection. - Turn on (or if you do not want this protection: turn off) Protect Mail Activity.