I am the xiaomiMi4i user for last 10 months, phone features is good but phathetic customer service in shimla, I went to customer care center, they told me that no confirmation about spare parts, company not provide the spare parts.It will take so many times.The issue is that My phone jack is not working properly and battery takes 3 times more to charged, so I can change my phone jack to be my phone is to work properly and my phone is under warrenty, This is actually a good phone in the range of price, im already used this phone for 1 year and there is no big issue that I found.