A SIM PIN is a security feature designed to protect your SIM or eSIM from unauthorised use. Think of it as a lock on your SIM or eSIM - without the correct PIN, no one can access your mobile network. Whether it’s making calls, sending texts, or using mobile data, a SIM PIN ensures that only you can control your phone’s connectivity.
What is the Default SIM PIN?
The default SIM PIN is set to 0000. However, to keep your mobile account secure, it’s a good idea to change this to a unique PIN that only you know.
How do I set up a PIN for my SIM or eSIM?
iPhone.
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- Open Settings.
- Tap ‘Mobile Service’.
- Tap on ‘SIM PIN’.
- Tap the toggle the switch to turn SIM PIN on.
- Enter the default PIN (0000).
- Tap ‘Done’.
- Tap ‘Change PIN’.
- Enter the default PIN (0000).
- Tap ‘Done’.
- Enter your new PIN.
- Tap ‘Done’.
Samsung Galaxy.
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- Open Settings.
- Tap ‘Biometrics and security’.
- Tap ‘Other security settings’/
- Tap ‘Set up SIM card lock’.
- Toggle the switch to enable SIM lock.
- Enter the default PIN (0000).
- Tap ‘Change SIM card PIN’.
- Update it to a new, personalised PIN.
Most other Android phones.
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- Open Settings.
- Tap ‘Security’.
- Under the SIM card section, tap ‘Advanced’ and then ‘SIM card lock’.
- Toggle the switch to enable it.
- Enter the default SIM PIN (0000).
- You can now choose a new, more secure PIN.