Protecting passwords
How do I turn off passwords on my iphone and only keep them on my Mac Air. I don't want to take a chance of losing my phone and having someone be able to get access to my passwords.
MacBook Pro 15″, macOS 10.15
You phone is completely encrypted. .
As long as no one knows your iPhone passcode, your data - including Keychain entries - are VERY securely protected.
Suggest you might consider using a long (longer than six digit) “custom” passcode if you have concerns.
Using Touch/FaceID - if available - further reduces the opportunity for your passcode to be observed.
Also see this article:
Use the built-in privacy and security protections of iPhone – Apple Support (AU)