Securing Samsung Galaxy M31 with Make Passwords Invisible

FUNCTION: If 'Make passwords visible' option is enable, password characters will be displayed briefly when user type them, which lead to surrounding people able to eavesdropping

1. Settings > Biometrics and security

2. Other security settings > Make passwords visible: Disable

Securing Samsung Galaxy M31 with Lock Screen

Protection Level: Medium to high security

1. Settings > Lock screen

2. Screen lock type > PIN

3. PIN must contain at least 4 digits: {6-digit PIN}

    Confirm PIN without tapping OK: Tick

    Continue

4. Enter the PIN again to confirm it: {6-digit PIN}

    Continue

5. Back up your PIN? > Continue

6. Sign in to your Samsung account:

    Email: {emailid@gmail.com}

    Password: {email_password}

7. Welcome to your Samsung account:

    Terms and Conditions: Tick

    Special terms: Tick

    Samsung Privacy Policy: Tick

    Agree

8. Verify your phone number:

    Phone number: {1xxxxxxxx}

    Verification Code: {6-digit code}

    Verify

9. Signed in

Securing Samsung Galaxy M31 with Lock SIM Card

1. Settings > Biometrics and security

2. Other security settings > Set up SIM card lock > Lock SIM card: Enable

3. Lock SIM card:

    Enter your current SIM card PIN: {4-digit PIN} > OK

4. Change SIM card PIN:

    Enter your current SIM card PIN: {4-digit PIN} > OK

    Enter a new SIM card PIN: {4-digit PIN} > OK

    Enter the new SIM card PIN again to confirm it: {4-digit PIN} > OK

5. SIM PIN changed successfully.

Retrieve digi SIM PIN

1. Login to MyDigi

    Email or Mobile Number: {emailid@domain.com}

    Password: {password}

    Log In

2. Enter the TAC we've just sent to the number 601xxxxxxxx: {6-digit TAC}

    Proceed

3. Account > Plan Settings

4. SIM card information

    PIN 1: {4-digit PIN}

    PIN 2: {4-digit PIN}

    PUK 1: {8-digit PUK}

    PUK 2: {8-digit PUK}

Samsung Galaxy M31: Show Battery Percentage in Status Bar

1. Settings > Notifications 

2. Status bar:

    Show battery percentage: Enable