I bought my iPhone when I lived in Japan, and now it works fine in the Netherlands. There are a number of little things at the device’s region-specific firmware level (for example, I can’t turn off the camera shutter sound when taking photos, which is required by Japanese law), but most of them are implemented via a ROM that I think is pretty universal. Some of the jobs I previously had have now disappeared, for example because I changed region. The code to reinstall it is somewhere in the ROM, which I think is universal, but some standard stuff installs or uninstalls the OS if you change the region (or e.g. language or keyboard, it’s quite standard) .

Google AI and Baidu AI will not run on the same iPhone or be installed. There are two options for arranging this integration. Or Apple runs it via the App Store, so you turn on Baidu integration via a separate app, which is likely only downloadable if your App Store account is set to the China region (this is separate from the OS’s region settings again and linked to the account). . Or there is an installation package somewhere internally on each ROM to install the integration functionality once the region of the device itself is set to China, and it will then be automatically uninstalled if you change the region from China again (this will also likely be a subscription, as it still You have to enable a specific setting after changing the region). The third option is that they will use a system that works exactly as you can now install additional keyboard variants, or they will integrate this AI functionality into the keyboard system itself (spelling check is already included, which is also AI).