I don't get why they wouldn't already insist on Huwawei and HarmonyOS unless this is more of an Inner Party issue where all the high-ups use iPhone intentionall

I don't get why they wouldn't already insist on Huwawei and HarmonyOS unless this is more of an Inner Party issue where all the high-ups use iPhone intentionally because its more private than Huawei I wonder what phone Z has been using all this time...