How you protect iPhone against trojans, malware, phishing attacks, spying of private data?

So?

As KiltedTim says, phishing attacks are easy to deal with. Simply don’t respond to such ridiculous emails or other messages.

Avoid phishing emails, fake 'virus' alerts, phony support calls, and other scams - Apple Support

aninimous wrote:

Phishing attacks on Apple Mac OS and iOS up by 9% in 2019: Kaspersky Report

That's because the criminals perpetrating them know that there are suckers out there who will fall for them.

Don't be a sucker.

Use common sense. Check the source, and don't respond to them.

Phishing attacks prey on paranoia and ignorance, not sophisticated technical trickery..

If your phone has not been previously jailbroken, no such product is required.

The only defense against phishing attacks is common sense.

Technology won't stop you from doing something you shouldn't.