Apple four generations have the difference between locking and unlocking! What do you mean with or without a card?

The difference between locking and unlocking "

1, the so-called unlocked version of iphone means that you can't use the SIM card designated by your phone operator after purchase. But any company's SIM card can be used normally. Simply put, this iphone is unlocked, and users can upgrade and jailbreak at will, without any restrictions.

2. The locked version of iphone can be understood as a contract signing machine, which is a way for operators to set up machine card binding to prevent default (using SIM cards other than operators). After setting, you can only use the SIM card designated by its telephone operator. If you want to use another carrier's SIM card, you must unlock the iPhone.

3. When upgrading the firmware of the locked iPhone, be careful about baseband upgrade (of course, you can also choose baseband upgrade), because some baseband cannot be unlocked. For example, some Japanese versions can't make phone calls, send text messages, surf the Internet, etc. unless the lock is unlocked. In China, it can only be used as an iPod Touch. Even though many cracked versions of Cato sold privately in China are compatible with some versions, they are still inferior to the unlocked version of iPhone in the firmware upgrade of mobile phones, so even if the price of the locked version of iPhone is much lower than that of the unlocked version, ordinary users still spend more money to buy the unlocked version.

Description of whether there is a sticker:

The difference between sticker machine and ordinary machine is that there are many stickers.

Card sticker, a chip, is attached to the sim card of a mobile phone and inserted into a locked machine, some of which are automatically unlocked and some need to be operated.

Tip: the card is only applicable to the corresponding version of the machine, and the system cannot be upgraded at will.

Distinguishing method:

1. The sticker will have an icon of Qcard.

2.iPhone5 and 4S can check the operators by setting-General-About this machine. If the name of the operator is in English or garbled, such as Vodafone IE 14.0, it is probably a built-in card sticker.

3. +86 will be displayed in front of the number of receiving SMS, and the built-in card pasting machine has this function.

4. There is an IMEI number printed on 4. SIM card slot. You can copy the number to the IMEI verification website for verification.