What's the difference between Apple International Edition (iPhone) and Bank of China Edition?

If there is no international version, what version is issued in different regions is called what version, for example, the United States issues the American version and Japan issues the Japanese version. The difference between the Bank of China version and the foreign version is that the Bank of China version supports the carrier network in China and only sells it in China, shielding the news and other functions that cannot be used in China, and adding a nine-grid input method that is convenient for Chinese people to input.