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1

Before you start

If you would like to set up a lock screen on your phone, start from the next step. If you would like to change the SIM pin code, jump to step 13. Make sure you have your Public SIM PIN before you start the guide.

2

Select Apps

Select Apps
3

Select Settings

Select Settings
4

Select Security

Select Security
5

Select Screen lock

Select Screen lock
6

Select Pattern

Select Pattern
7

Draw an unlock pattern and select Continue

Draw an unlock pattern and select Continue
8

Draw the unlock pattern again and select Confirm

Draw the unlock pattern again and select Confirm
9

Select OK

Select OK
10

Select a security question and select Continue

Select a security question and select Continue
11

Enter the answer and select Confirm

Enter the answer and select Confirm
12

Your phone is now secure with a screen lock

Your phone is now secure with a screen lock
13

To change the PIN for the SIM card, return to the Security menu and select Set up SIM/RUIM card lock

To change the PIN for the SIM card, return to the Security menu and select Set up SIM/RUIM card lock
14

Select Change SIM PIN

Select Change SIM PIN
15

Enter your old SIM PIN and select OK

Enter your old SIM PIN and select OK

Old SIM PIN

16

Enter your new SIM PIN and select OK

Enter your new SIM PIN and select OK

New SIM PIN

17

Confirm your new SIM PIN and select OK

Your SIM PIN has been changed.

Confirm your new SIM PIN and select OK

Confirm new SIM PIN

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Secure phone

Sony Xperia M

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