How can I check for malware on my iPhone?

Judygayles wrote:

I keep getting text that I have malware on my phone. I didn’t think malware or viruses could break through. I must get 40 or more texts or emails a day saying I have malware or viruses or my account is in danger

You think correctly. Those messages are scams, to steal your data, your money, or both if you respond→Avoid phishing emails, fake ‘virus‘ alerts, phony support calls, and other scams

Judygayles wrote:

How to I check for malware on my iPhone?

[Re-Titled by Moderator]

That’s easy. If you haven’t jailbroken your phone, there is no malware on it.

If you want to check for the security of your phone follow this guidance→How Safety Check on iPhone works to keep you safe. This will check for things like weak passwords.

Jailbreaking is hacking your own phone to bypass Apple’s safety protections. If you don’t know what it is you haven’t done it. Yes, those messages are scams to gain access to your Apple ID. You can forward them to reportphishing@apple.com and Apple will try to shut them down.

No need to do that. Unless you have a jailbreak on your phone, you can’t get malware. Why do you think you might have a problem?