Nippon Television explained the explanation of the "smartphone SIM card lock" as a crime countermeasure, which was broadcast on the 27th in the "class I want to take in the wO Rld", and said, "I have a difficult point to understand."If you can't, please refrain from operating. "
Text listed on Nippon Television site
In the current smartphone, the wrong operation is easy to operate, but it is not easy to use.
The lock function with the PIN code of the SIM card has existed since the 3G mobile phone era, and the setting method is also posted on the TCA (General IncO RpO Rated CO RpO Rate CO RpO Rate CO RpO Ration Association) site.Like (https: // www.TCA.O R.JP/Mobile/SIM-PIN.HTML), it doesn't mean that the function itself is meaningless.However, it can be said that it is easy to do incorrect operation, and as a result, it is easy to fall into situations such as a smartphone temporarily unusable.
First, when the PIN code is set on the SIM card, a 4 -digit PIN code input is required when starting up the terminal, and if you make a mistake three times in a row, it will automatically call and incoming the phone.And data communication is impossible.
However, since this lock function is usually off by default, start by turning on the function on the smartphone.The initial value of the PIN code (4 -digit number) is set for each carrier, and it is necessary to enter the "current PIN code" (that is, the initial value at the first time) when the function is turned on, and then change the PIN code.be.Of course, the information on the initial value is posted on the carrier site, but if you start the work without checking it and enter it three times with "1111", it will lock at that point.
When turning on the function, the current PIN code input is required.If the initial value remains, it is necessary to check the initial value.
Even if you clear this stage, you will definitely want to use the numbers in your memory, because you will lock just three times in a row.That said, using your birthday or the lower 4 digits of your mobile number is counterproductive.In other words, as a smartphone security measure, it can be said that it is a very unreasonable function (although there are also effective situations such as traveling abroad to areas where theft is likely).
The locked SIM can be canceled by entering the 8 -digit PIN unlock code (Puk code).The Puk code can be confirmed by credit card size cards with SIM cards, documents at the time of contract, and career support.However, if you make a mistake in this puk code 10 times in a row, it will be completely locked and you need to replace the SIM card itself.
Puk code can also be checked on career support sites, etc.
For the use of smartphones, I would like to make sure that you need to stop your career support and the basic measures when you lose or theft, as well as registering your own passcodes and fingerprints.
