Is Apple 12 single card or dual card?

The Bank of China version of Apple 12 supports dual card dual standby.

but the us version of apple 12 only supports a single card. Apple 12 can support mobile, Unicom, 3G and 2G networks. It has five colors: black, white, red, green and blue. The size of the mobile phone is 146.7*71.5*7.4mm and its weight is 162g.

Apple's mobile phone didn't support dual-card dual standby function at first, which was much later than other Android phones. Apple CEO Cook should have heard the voices of many iPhone users, and only from the generation of iPhoneXSMax and iPhoneXR did he support the dual-card dual standby function.

The dual-card version has two physical SIM card slots, and two SIM cards can be placed at the same time. The single-card version has only one card slot, but the other one is an eSIM card, which can be activated by the operator's background writing.

The difference between the US version and the Bank of China

The main difference between the US version and the Bank of China lies in the different signal frequency bands. There are many telecom operators in the United States, and the signal frequency bands of some operators are incompatible with domestic operators. For example, the Apple Six Edition is only compatible with China Mobile and China Unicom, but not with telecommunications, while the mobile phones of the Bank of China are compatible with these three operators, that is, China Mobile, China Unicom and China Telecom can all be used without changing operators.

Almost all the iPhone sold in China are Bank of China versions, and the purchase of the American version requires overseas travel purchase, overseas purchasing, customs auction, and some unspeakable ways.

It's more expensive to buy the National Bank version of Apple's mobile phone, but the US version can't carry out three guarantees in China. If there is a problem, you can only repair it at your own expense, while the original accessories of Apple's mobile phone are more expensive. And the Bank of China can carry out three guarantees, free maintenance or compensation, replacement of machines.

refer to Baidu encyclopedia-apple 12 for the above contents.