On my iPad with IOS 12 and 1Password 7.2 the autofill feature allows selection of 1Password in addition to Keychain. But on iPhone 5S and SE which are running 1Password 7.1.1 and IOS 12, there is no option to select 1Password for autofill, only Keychain is enabled automatically. Can 1Password version 7.2 be loaded on these devices and is the older software the reason IOS 12 doesn't allow the 1Password integration with autofill?
1Password Version: 7.1.1
Extension Version: Not Provided
OS Version: IOS 12
Sync Type: iCloud