To add a bit of context, China forces Android users in Xinjiang to install surveillance apps:

- https://www.vice.com/en_us/article/ne94dg/jingwang-app-no-en...

- https://www.vice.com/en_us/article/7xgame/at-chinese-border-...

Such apps wouldn't work on iOS, due to its tighter security. But apparently if you're China that's not much of a deterrent, because you can just buy a rootkit to get around such limitations.