Microsoft Lumia 435 - Change your PIN code

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Change your PIN code
If your SIM card came with a default PIN code, you can change it to something more secure.
Not all network service providers support this feature.
1. On the start screen, swipe down from the top of the screen, and tap ALL SETTINGS.

2. Swipe left to applications, and tap phone.

3. If you have a dual SIM phone, select the SIM you want. Dual SIM is not supported by all

phones. For availability, go to

4. Tap change SIM PIN.
The PIN code can be 4-8 digits.