Nokia 5.1 user guide
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Access codes
Learn what the different codes on your phone are for.
PIN or PIN2 code
PIN or PIN2 codes have 4-8 digits.
These codes protect your SIM card against unauthorized use or are required to access some features. You can set your phone to ask for the PIN code when you switch it on.
If you forget the codes or they aren'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 or PUK2 code.
PUK or PUK2 codes
PUK or PUK2 codes are required to unblock a PIN or PIN2 code.
If the codes are not supplied with your SIM card, contact your network service provider.
Lock code
Lock code is also known as security code or password.
The lock code 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 authorized service facility for your phone, or your phone dealer.
IMEI code
The IMEI code is used to identify phones in the network. You may also need to give the number to your authorized service facility services or phone dealer.
To view your IMEI number, dial
Your phone’s IMEI code is also printed either on your phone or on the SIM tray depending on your phone model. If your phone has a removable back cover, you can find the IMEI code under the cover.
The IMEI is also visible on the original sales box.
Locate or lock your phone
If you lose your phone, you may be able to find, lock, or erase it remotely if you have signed in to a Google Account. Find My Device is on by default for phones associated with a Google Account.
To use Find My Device, your lost phone must be:
- Turned on
- Signed in to a Google Account
- Connected to mobile data or Wi-Fi
- Visible on Google Play
- Location turned on
- Find My Device turned on
When Find My Device connects with your phone, you see the phone's location, and the phone gets a notification.
- Open android.com/find on a computer, tablet or phone connected to the internet and sign in to your Google Account.
- If you have more than one phone, click the lost phone at the top of the screen.
- On the map, see about where the phone is. The location is approximate and may not be accurate.
If your device can't be found, Find My Device will show its last known location, if available. To lock or erase your phone, follow the instructions on the web site.