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1

Before you start

If you would like to change the SIM pin code, start from the next step. If you would like to set up a lock screen on your phone, jump to step 10. Make sure you have your Public SIM PIN before you start the guide.

2

Swipe left

Swipe left
3

Scroll to and select Settings

Scroll to and select Settings
4

Select Network & wireless

Select Network & wireless
5

Select Mobile & SIM

Select Mobile & SIM
6

Scroll to and select SIM settings

Scroll to and select SIM settings
7

Scroll to and select Change SIM PIN

Scroll to and select Change SIM PIN
8

Enter your SIM PIN and New SIM PIN. Confirm New SIM PIN and select OK

Enter your SIM PIN and New SIM PIN. Confirm New SIM PIN and select OK

SIM PIN

New SIM PIN

Confirm New SIM PIN

9

Your SIM PIN has been changed

Your SIM PIN has been changed
10

To activate your screen lock, go to the Settings menu and select Personalisation

To activate your screen lock, go to the Settings menu and select Personalisation
11

Select Lock screen

Select Lock screen
12

Scroll to and select Sign-in options

Scroll to and select Sign-in options
13

Select Add

Select Add
14

Enter your Microsoft account password and select save

Enter your Microsoft account password and select save

Password

15

Enter your New PIN twice and select OK

Enter your New PIN twice and select OK

New PIN

New PIN

16

Select Require sign-in

Select Require sign-in
17

Select Every Time

Select Every Time
18

Your phone is now secure with a screen lock.

Your phone is now secure with a screen lock.
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Secure phone

Microsoft Lumia 640 Dual SIM

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