0 To access the SIM PIN settings, go to: iPhone: Go to Settings > Phone > SIM PIN from the Home screen.Tap Settings > Cellular > SIM PIN on the iPad's Home screen.Slide the SIM PIN slider to the ON position (if necessary).Change the PIN by tapping on it.Please enter your current PIN (default is 1234).Make a new PIN.To confirm, enter the new PIN once more.Save the file. Read more Add comment