Changes

* May allow Allow a weaker screen lock password if the user is informed of the possible consequences:** Problem solved*** Unlocking the phone screen is done several times a day, sometimes several times within a few minutes, thus users very rarely use a strong phone unlocking mechanism (generally, a 4 to 8 number PIN code)*** User is not tempted to use a weak PIN to decrypt the phone, since decryption only occurs during phone startup (key is kept in memory afterwards)** Additional risks*** Weaker screen unlock mechanism (such as a PIN), can give lead to access to sensitive the encrypted data, depending ** Rationale*** It is currently harder to crack a PIN on a running device (no brute force input available)*** Shutting the applications and phone down ensures a better level of security assurance since the encryption is using a strong password*** Using a PIN for encryption generally renders the configurationencryption useless as those can be cracked in seconds (see for example https://viaforensics.com/viaextract/viaextract-includes-android-encryption-cracking.html )