Is the American version of Apple's mobile phone good or not.
First of all, we need to know the difference between the National Bank and the American version.
1. The place of sale is different. The place of sale of BNM is Chinese mainland. The US version is sold in the United States.
2. The version is different. Regarding the Xingsheng version of the Apple mobile phone, the National Bank only has an ironless version. The US version has two versions, one is the card machine version and the other is the unlocked version. The national version of the iPhone is unlocked, can be directly inserted into any operator's SIM card activation use, while the American version of the iPhone has a lock version and no lock version coexist, the locked version is also known as the contract version, that is, bound to foreign operators, can not use the Chinese phone card, but this can be cracked with the card sticker, after cracking it needs to be used with the card sticker, change the card or erase all the content need to be cracked again activation.
3. The operation is different. The W of the National Bank of China is written for wireless LAN, which can manage the AP using data flow is either WFi, or both. The US version does not.
4. The network setting function is different. The National Bank version of the phone will have an option to use WLAN and cellular network under "Set up wireless LAN". The foreign version does not have this option function.
5. The warranty is different. BNM's can be jointly guaranteed in China. And the American version can only be changed abroad.
6. The operators are different. The most important point is that the operators are different, the US version uses the frequency set by foreign operators, and the domestic signal frequency is incompatible, which may lead to some restrictions on the domestic signal of the US version of the mobile phone.
7. The price is different. The US version is cheaper than the National Bank, but there is basically no difference in quality and experience, after all, most of the iPhone's products are assembled in China.
8. The National Bank version of the iPhone supports mobile phone shutdown charging, while the US version of iPhone does not, even if the mobile phone is used until it is turned off, as long as the data cable is plugged in to charge, it will automatically turn on.
Then there is whether the American version is worth buying
The American version of the iPhone has more pits.
One is the official change. Official replacement is when the iPhone fails, after-sales to replace the machine. Because the domestic warranty policy is only repaired but not replaced, many people go abroad to exploit the loopholes in the warranty policy. Exchange the US version of the official machine at a lower cost, and then take it back to China, and sell it as a high-priced retail machine after the code change.
The other is a locking machine. That is, the contract can only use the SIM card of a specific operator, and the price is also very cheap, giving scalpers a lot of profit margins. Therefore, the machine with the lock will be taken back to China for sale, but the iPhone with the network lock is normally unable to insert the card in China, and can only be blacked or carded.
Because of this, before buying the US version of the iPhone, you must first check the serial number, get the GSX inspection report through the serial number, you can know whether the iPhone is an official replacement or a retail machine, whether there is a network lock and so on.