If I change a password on my IPhone, my IPad or my Mac computer, how do I update the other two devices?

I changed a password on the Mac Computer but it does not change on either my IPhone or my IPad. I shut down to IPhone and the IPad and restarted them but the password does not change. I have checked to see that Keychain is on for all three devices. Any ideas?

I am still unsure of how to proceed. I am in the process of changing all my passwords due to a hack. Are you telling me I must manually enter new passwords on each device? Suppose I create a new business account and create a password on one device and save it into password. Won't Keychain sent that to the other devices?

If not it looks like I will have to delete all the passwords on a device and then manually enter the password on each account I attempt to access from a device. If I delete all the passwords on the IPad and then change and save passwords on the Mac computer, will Keychain enable me to later log into a business (non-Apple) account on the IPad or IPhone or will I have to manually update the password in each device?

This also implies that every time I change a password, I will need to manually update all devices. Unfortunately, several of the government sites I visit frequently require a password change every 90 days.

Lawrence. Thanks for trying to help. As I wrote earlier, I have Keychain on for all 3 devices. All the passwords are currently. Synced. However when I change a password using one device Keychain does not update the other two devices. There must be a way to not have to manually put changed new passwords into every device, I just haven’t stumbled onto it yet. Thanks again for trying to help.

That is not what I changed. It was for a business account. I have manually put the changed password into the IPad and it works, however it did not automatically change.