Device Guides

Samsung Galaxy S III

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I can't start up my mobile phone

This troubleshooting guide will take you through a number of possible causes to help you find a solution to your problem.

Possible cause 3:

The phone lock code is turned on: Turn off the phone lock code.Detailed instructions.

List view

1. 1. Find "Screen lock"

Tap Apps.

Tap Settings.

Tap Security.

Tap Screen lock.

2. 2. Choose option

Choose one of the following options:
Create phone lock code using swipe, go to 2a.
Create phone lock code using face recognition, go to 2b.
Create phone lock code using a pattern, go to 2c.
Create phone lock code using a PIN, go to 2d.
Create phone lock code using a password, go to 2e.
Turn off use of phone lock code, go to 2f.

3. 3. 2a - Create phone lock code using swipe

Tap Swipe.

4. 4. 2b - Create phone lock code using face recognition

Tap Face unlock.

Tap Set it up.

Tap Continue.
Hold your mobile phone in front of your face and centre your face in the circle displayed.
Wait while your mobile phone registers your face.

Tap Continue.

Tap Pattern or PIN.

If you select Pattern:

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

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

Tap Confirm.

Tap OK.

If you select PIN:

Key in the required phone lock code and tap Continue.

Key in the phone lock code again and tap OK.

5. 5. 2c - Create phone lock code using a pattern

Tap Pattern.

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

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

Tap Confirm.

6. 6. 2d - Create phone lock code using a PIN

Tap PIN.

Key in the required phone lock code and tap Continue.

Key in the phone lock code again and tap OK.

7. 7. 2e - Create phone lock code using a password

Tap Password.

Key in the required phone lock code and tap Continue.

Key in the phone lock code again and tap OK.

8. 8. 2f - Turn off use of phone lock code

Tap None.

9. 9. Exit

Tap the Home key to return to standby mode.

Step 1 of 31

Tap Apps.

Step 2 of 31

Tap Settings.

Step 3 of 31

Tap Security.

Step 4 of 31

Tap Screen lock.

Step 5 of 31

Choose one of the following options:Create phone lock code using swipe, go to 2a.Create phone lock code using face recognition, go to 2b.Create phone lock code using a pattern, go to 2c.Create phone lock code using a PIN, go to 2d.Create phone lock code using a password, go to 2e.Turn off use of phone lock code, go to 2f.

Step 6 of 31

Tap Swipe.

Step 7 of 31

Tap Face unlock.

Step 8 of 31

Tap Set it up.

Step 9 of 31

Tap Continue.Hold your mobile phone in front of your face and centre your face in the circle displayed.Wait while your mobile phone registers your face.

Step 10 of 31

Tap Continue.

Step 11 of 31

Tap Pattern or PIN.

Step 12 of 31

If you select Pattern:

Step 13 of 31

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

Step 14 of 31

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

Step 15 of 31

Tap Confirm.

Step 16 of 31

Tap OK.

Step 17 of 31

If you select PIN:

Step 18 of 31

Key in the required phone lock code and tap Continue.

Step 19 of 31

Key in the phone lock code again and tap OK.

Step 20 of 31

Tap Pattern.

Step 21 of 31

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

Step 22 of 31

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

Step 23 of 31

Tap Confirm.

Step 24 of 31

Tap PIN.

Step 25 of 31

Key in the required phone lock code and tap Continue.

Step 26 of 31

Key in the phone lock code again and tap OK.

Step 27 of 31

Tap Password.

Step 28 of 31

Key in the required phone lock code and tap Continue.

Step 29 of 31

Key in the phone lock code again and tap OK.

Step 30 of 31

Tap None.

Step 31 of 31

Tap the Home key to return to standby mode.

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