When the SIM card is delivered, it is protected by the provider by a four-digit PIN number as standard to prevent unauthorized access.
Since the standard PIN consists of an arbitrary combination of numbers, it is usually rather difficult to remember and a change of PIN is desired.
The PIN change can be made directly on the OnePlus smartphone and is stored directly on the SIM card, providing cross-device protection of the data contained there.
Note: If a PIN is entered incorrectly three times in a row, it is first blocked.
It can then be unblocked by entering the eight-digit PUK number.
This can be found in the corresponding SIM card documents.
- Open the Settings
- Tap on Security & lock screen
- Tap on SIM card lock
- Choose the SIM card (Dual SIM)
- Tap on Change SIM PIN
- Enter the current/old PIN and tap OK
- Enter the new PIN and tap OK
- Enter the new PIN again and tap OK