Microsoft Lumia 640 - Access codes

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Access codes

Learn what the different codes on your phone are for.

PIN code
(4-8 digits)

This protects your SIM card against

unauthorized use or is required to access

some features.
You can set your phone to ask for the PIN

code when you turn it on.

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If you forget the code or it isn't supplied with

your card, contact your network service

provider.
If you type in the code incorrectly 3 times in

a row, you need to unblock the code with the

PUK code.

PUK

This is required to unblock a PIN code.
If the code is not supplied with your SIM card,

contact your network service provider.

Security code (lock code, password)
(min. 4 digits)

This helps you protect your phone against

unauthorized use.
You can set your phone to ask for the lock

code that you define.
Keep the code secret and in a safe place,

separate from your phone.
If you forget the code and your phone is

locked, your phone will require service.

Additional charges may apply, and all the

personal data on your phone may be

deleted.
For more info, contact the nearest care point

for your phone, or your phone dealer.

IMEI

This is used to identify phones in the

network. You may also need to give the

number to your care point services or phone

dealer.
To view your IMEI number, dial *#06#.

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