Sony Xperia M

Find "Screen lock"

Slide your finger down the display starting from the top edge of your phone.
Press the settings icon.

Find "Screen lock"

Press Security.

Find "Screen lock"

Press Screen lock.

Select option

You can create several types of phone lock codes. The following steps show two examples:
Create phone lock code using a pattern, go to 2a.
Create phone lock code using a PIN, go to 2b.

2a - Create phone lock code using a pattern

Press Pattern.

2a - Create phone lock code using a pattern

Press and drag a point to connect at least four points.

2a - Create phone lock code using a pattern

Press Continue.
Repeat the selected phone lock code to confirm.

2a - Create phone lock code using a pattern

Press Confirm.

2a - Create phone lock code using a pattern

Press OK.

2a - Create phone lock code using a pattern

Press the required question.

2a - Create phone lock code using a pattern

Press Continue.

2a - Create phone lock code using a pattern

Press Answer.

2a - Create phone lock code using a pattern

Key in the answer to the selected question and press Confirm.

2b - Create phone lock code using a PIN

Press PIN.

2b - Create phone lock code using a PIN

Key in the required phone lock code and press Continue.

2b - Create phone lock code using a PIN

Key in the phone lock code again and press OK.

Turn off use of phone lock code

Press None.

Return to the home screen

Press the home icon to return to the home screen.