The model number on the back cover of the iphone is A1431, what does CMIIT ID 2011CJ6093 mean? Thank

A1431 is a mainland national bank iPhone. There is another common model is A1387, which is the model of iPhone in most countries in the world, and the American version, Canadian version, Australian version, Hong Kong, China, Taiwan, etc. are A1387. There is a difference between the two models of iPhone, but the difference is not very big.

A1431 is iPhone 4S... Network access license only.

Apple iPhone 4S has passed China's 3C certification, model A1431, certificate number is 2011011606515756, the applicant is Apple computer ** (Shanghai) ****, the manufacturer is Apple Inc., the certificate date is December 21, 2011, and the certificate deadline is December 21, 2016.

I can't be sure about this, please give me the exact serial number!

2. Settings - General - About this machine.

The model number can be viewed. The last two CH are the national bank, ZP is the Hong Kong bank, KH is the Korean version, and LL is the American version of the machine.

The last c, is the Canadian version, X is the Australian version, B is the British version, and F is the French version.

This is often referred to as the sales region or version number).

3. It is said that the official flip machine factory is in line with the quality standards, so there will generally be no problems, if it is replaced after sale, it will not suffer any loss, and it can be used with peace of mind. But there are also sellers who will** this type of machine (no matter how it comes, anyway, the national bank can be replaced if there is a problem, ** the second mobile phone can not only be used for private refurbishment, if there is a little problem, you can also go to the after-sales service), it will generally be cheaper, such as c7g, c3k starting with the machine 3700 or so is more reasonable, I hope you can realize when you buy the machine: c7g machine is different from ordinary machine, belongs to the after-sales replacement, the quality may not be a problem, but the warranty is not one year,** It is also lower than a normal machine.

In addition, the serial number of the recently manufactured machine begins with C8 and DX, such as C8W, C8P, DX3, DX4, DX5, etc., if it is C37, C38, CCP, C39, it can basically be judged that it is last year or the first half of this year, and it should be paid special attention to the refurbished machine.

Whether it is a brand new machine, please refer to your actual purchase date and the warranty date inquired above.

This is because the warranty is a full year from the day of activation.

Satisfied, thank you! ~

This should be the end of its warranty date. Thank you!

Serial number: 88940U258L0

Device name: iPhone 3G (China) Capacity: 8GB

Color: Black.

Type: iphone1,2

Code: N82AP

Model: MC176

Activated Status: Activated.

**Support: Expired.

Warranty Expires: Expired.

Production plant mubrother: Shenzhen, China.

Date of production: October 08, 2009 - October 14, 2009.

The American version has a lock-and-lose leak-resistant machine.

It was activated for three years depending on production time.

If you have just started with a bad job, and the merchant tells you that it is a brand new machine, then you have been deceived.

This is a refurbished machine.

It is recommended to find the person who sold your mobile phone for return and exchange as soon as possible.

The version can be viewed according to the last 2 digits of the model number according to [Settings General About this machine].

CH is the Bank of China, ZP is the Hong Kong and Macau version, TA is the Taiwan version, ZA is the Singapore and Malaysian version, RS is the Russian version, and P is the Italian version. These are unlocked.

DN is the German version, J is the Japanese version, LL is the American version, B is the British version, KH is the Korean version, C is the Canadian version, X is the Australian version, B is the British version, and FB is the French version. These are locked.

Device details.

Device name: iPhone 3G 8GB Black Device type: iPhone

System Version: Date of Manufacture: 10 4 2009 - 10 11 2009 Place of Origin: China (Shenzhen).

Serial number: 88940U258L0

Mobile phone number: 04725902666

IMEI MEID: 011978006852218 None.

Country**: cn

Carrier**: Unicom - China chn activated: Yes.

Initial activation strategy: China unicom

Current activation policy: China unicom

Next time activate the World Shirt Zen strategy: China unicom

Equipment warranty information.

Device name: iPhone 3G (China) Configuration information: iPhone 3G (China), 8GB, Black, N82C

Sales area: China.

Warranty Status: Loss of Warranty (No Warranty).

Estimated Date of Purchase: 3/14/10

Register to purchase date: 10-3-14

There is a large gap between the production and activation dates or the warranty expires.

So this machine may be an original used or refurbished machine.

2. Select through the mobile phone: Settings - General - About the model that can be viewed on this machine (that is, the sales area or the version of the dust search number).

The last two digits: CH is the national bank, ZP is the Hong Kong version, LL is the American version, ZA is Singapore, TA is Taiwan, KH is South Korea, and the last digit is: B is the UK, C is the Canadian version, X is the Australian version, F is the French version, and J is Japan.

90 days of free after-sales service support and a full year warranty from the day the new device is activated.

Please be timely, yours is our motivation! Thank you for your cooperation

Glutinous rice mobile phone group will answer your questions.