I don't know, I'm pretty certain most people would take my advice over yours about almost anything, because you're an idiot.
But despite the fact that the Chinese government has a well-known, widely accepted and long history of lying and espionage, here's a few easily searchable articles about the shitphones that Xiaomi make and the spyware apps they install:
Chinese app on Xi’s ideology allows data access to users’ phones - Washington Post
An app released by the Chinese Communist Party earlier this year has been found to have virtually unlimited access to the data on a user’s Android smartphone—and the consequences are horrifying, reports the Washington Post. The app, called “Study the Great Nation,” was released by the Chinese Communist Party back in January, and by April Chinese state media said it had become the most downloaded app in China, with over 100 million downloads.
The app is essentially a study guide about Chinese President Xi Jinping’s ideology and allows users to read and comment on videos and news articles about his activities, as well as take quizzes based on the information the user has learned and have their results posted to leaderboards.
However, the app has been found to be much more than a simple propaganda tool. The U.S. government-funded Open Technology Fund contracted Germany cybersecurity firm Cure53 to dig into the app’s code to see what was hidden beneath. What Cure53 found is about as Owellian as it gets.
The “Study the Great Nation” app has what’s known as “superuser” access on Android devices. As the Washington Post explains, such status is essentially a free-for-all backdoor for the app’s developers, in this case the Chinese Communist Party, to do and see anything they want to on the user’s phone.
The Redmi 1S was selling like hot cakes in 2014, but Xiaomi was hit by a big controversy at this point. The smartphone in question was found sending users’ personal information to Chinese data centres without their consent.
As for build quality, well, if you want a cheap, slightly shit clone of something better made elsewhere, then yeah, buy Chinese.