Thanks to Eric in Comments for pointing out this first item.
Xiaomi’s Redmi Note allegedly sending user data to China surreptitiously. The original source is here [Google Translate]. And now someone on the English-language MIUI forum has picked it up. Xiaomi VP Hugo Barra says all this isn’t true.
Meanwhile, Xiaomi made headlines today by being fined by the Taiwan Fair Trade Commission over irregularities with deadlined sales of several of its phones. This led to a bunch of public apologies on Weibo [first, second, third, fourth, fifth], and publicity on Weibo news channels [first, second], and news coverage on Weibo [Google Translate], and at China tech sites [Google Translate, Google Translate]. Google Translate makes it all too ambiguous for me to judge. I can’t tell if outright fraud was involved or poor accounting. Either way, Xiaomi was caught, humiliated, had to pay a fat fine, apologized, and promised not to let it happen again.
Without any links, because I think it’s trivial, Xiaomi is also being dumped on for not including NFC in the new Mi 4 phone. Xiaomi insists that of the millions of phones they’ve sold that have NFC, it’s been used so little that it’s just not worth including any longer.