Border agents in the region have been requiring tourists to hand over their phones and passcodes before entering, according to the reports. The agents will then disappear with the phones in order to snoop through them. For iPhones, that reportedly includes plugging them into a machine that scans through the phone’s contents. For Android phones, it goes further, with border agents installing a spyware app that scans the phone and collects data.
https://www.theverge.com/2019/7/2/20679053/china-spyware-tourists-android-phones-xinjiang
origin - https://www.pipiscrew.com/2019/07/china-has-been-secretly-installing-spyware-on-some-tourists-android-phones/ china-has-been-secretly-installing-spyware-on-some-tourists-android-phones