There are various ways to check if your iPhone is in China or in the United States.
First of all, the most direct way is to check the model interface of the phone, which usually displays the model and version information of the phone. If it is CHA, it means that it is a national model, and if it is LL A, it means that it is an American model.
Secondly, the version of the iPhone can be determined by querying the serial number. After connecting to the computer, use third-party software such as iTunes or AISI Assistant, etc., and enter the serial number in the software to query the specific model and version information.
Thirdly, you can judge the version of your iPhone by looking at the default language and region. If the default language is Chinese, then it is most likely the national versionIf the default language is English, it may be the US version.
Fourth, you can also look at the logo on the card slot to determine the version. If there is no SIM lock logo on the card slot, it may be the Chinese version, because foreign versions of iPhones usually need to be unlocked before they can be used. If you need to unlock your iPhone with a card, it may be the US version or another version.
In addition, looking at the invoice is also an effective way to determine the version of your iPhone. The invoice usually indicates the model and version information of the mobile phone, if the invoice is written in the Bank of China version, then it is the Bank of China iPhone;If you are writing the US version or another version, it may be the corresponding version of iPhone.
In short, there are many factors to consider when checking the version of an iPhone, including the model interface, serial number, default language, card slot identification, and invoice. Only by taking these factors into account can the version of the iPhone be more accurately determined.