antenna search
English ↓
Select operator
< Microsoft Lumia 640 Dual SIM

Secure phone - Microsoft Lumia 640 Dual SIM

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

Select Phone

Select Phone
3

Select the Menu button

Select the Menu button
4

Select Settings

Select Settings
5

Scroll to and select change SIM PIN

Scroll to and select change SIM PIN
6

Enter your current SIM PIN and select enter

Enter your current SIM PIN and select enter
7

Enter your new SIM PIN and select enter

Enter your new SIM PIN and select enter
8

Confirm your new SIM PIN and select enter

Confirm your new SIM PIN and select enter
9

Your SIM PIN has been changed

Your SIM PIN has been changed
10

To activate your screen lock, return to the Home screen and swipe left

To activate your screen lock, return to the Home screen and swipe left
11

Scroll to and select Settings

Scroll to and select Settings
12

Scroll to and select lock screen

Scroll to and select lock screen
13

Turn on Password

Turn on Password
14

Enter your new password twice and select done

Your phone is now secure with a screen lock.

Enter your new password twice and select done

Password

Confirm password

To Top

Secure phone

Microsoft Lumia 640 Dual SIM

Please select your country and operator below to see Device Guides for your operator.

Please note: Your operator does not offer Device Guides.

Some phones, tablets, guides, settings and other features will be unvavailable or incorrect.

Device Guides is offered to MNOs and MVNOs
by Mobilethink / Tweakker