IPhone 4 Card Binding root cause survey: American and Japanese operators are the originator

December 2 News, China Unicom on December 1 began to implement the new iphone contract plan, the card binding policy caused a stir, and the investigation found that the Unicom card binding initiative is only a copycat, overseas operators are already so, especially the United States at&t and Japan SoftBank, while, China also appeared early in the 2G era, GSM mobile phones and wireless fixed-line has such a binding policy.

US operator at&t The earliest implementation of the machine card binding

China Unicom began implementing the new iphone contract on December 1, which requires customers to only be on the card without separation, that is, bind to use the purchased Communications service, uhttp://www.aliyun.com/zixun/aggregation/34000.html " >sim Card, user number and the iphone terminal, we can enjoy the terminal subsidy policy offered by China Unicom to customers.

On Apple's website, Apple appears to be encouraging the carrier's card-binding measures, with most of the 100-odd carriers authorized by Apple to implement the card bindings that only use the iphone's number-card and network.

Early adopters of the use of the iphone, who first understood the carrier card binding was at&t, estimated that At&t was the first operator in the world to implement the policy.

In the United States, any legitimate iphone is tied to At&t when it is sold, and users have to use the AT&T network even if they pay the iphone in full. Because the iphone sold by at&t automatically locks up the operator when it activates, the phone only matches At&t's SIM card, and if a user inserts another operator's SIM card into the iphone, most of the features of the multimedia phone are unusable.

Since the US is an iphone operator, a strategy that was later emulated by other operators around the world, the policy has been replicated around the world, with Apple's iphone operators mostly using iphone-bound SIM cards and services, including Japan's soft silver, For the only operator in the country that has access to Apple's license, the locally marketed iphone can only be tied to authorized carriers.

Other terminals in Japan often implement card binding

The survey found that in Japan, operators to other terminals also implement the card binding policy, and implementation is very "resolute, thorough."

It is reported that in Japan, many of the mobile phone terminals with operator subsidies can be used by signing contracts with telecom operators. Japanese telecoms operators buy all of the end-selling rights to handset-makers, and handset makers only develop handsets for specific telecoms operators, many with lock-card devices that cannot be used if they are plugged into other operators ' SIM cards, for example, if a DoCoMo foma card is installed on a SoftBank phone ( DoCoMo SIM card), mobile phone can not be used.

European operators use the "SIM card lock terminal" approach, so that the benefits of the SIM card on the other operator's mobile phone can not use. In the UK, the binding business to send mobile phones has long been a British mobile phone operators to attract customers, users can enjoy the package after the offer is not allowed to turn the web.

Not only is the binding mobile phone, this year, the UK four operators to launch the binding Samsung NC10 Netbook package, in the enjoyment of concessions, to be bound in the net more than 1.5.

Wireless landline also lock card

In the country, if careful attention, many users use the wireless landline is also bound operators.

It is reported that because of wireless fixed-line related tariff concessions, in order to prevent users to put the SIM card into other mobile phones, wireless landline basic use of the relevant encryption technology to ensure that users of normal wireless landline use.

At present, some wireless fixed lock cards are mainly used "SIM Card lock Terminal" technology to achieve, the principle is that the SIM card can be used to authenticate the characteristics of the external equipment: when the wireless landline boot, the SIM card first to the wireless landline certification, certification through the SIM card after the completion of registration, certification failure, The SIM card will log on to the network registration function, the unregistered terminal will not be able to use the SIM card to login to the network.

In the earliest implementation of the machine card binding operator is China Mobile. With the implementation of the iphone 4, the same year, China Mobile "scheming" implementation of mobile phone calls, require the machine card binding, if the separation does not return the bill, and the signing period generally requires more than 1 to 2 years.