Are xiaomi phones good?
Warranty not void on rooting. The most unique thing about these line of phones is you do not lose your warranty if you root your device. Unlike other smartphones Xioami have unlocked bootloader so if you accidently break your device you can take it to any Xioami service centre and still be under warranty. Xioami are the first to offer warranty after rooting.
3rd largest producer of smartphones. After Apple and Samsung Xioami produces the most smartphones in the world beating out companies like HTC and Lenovo. They were also the 4th most valuable start up in history with $1 billion dollars received from investors.
Suspicious business activity. In India in 2014 there was a ban due to a complain filed by Erricson regarding patent infringements. Xioami worked around this by selling through affiliate sites and denying any involvement. Such suspect business practices are reason enough to expect sub-par quality in other areas such as device and customer service.