Security experts at F-Secure security firm has conducted a series of analysis on the new Xiaomi RedMi 1S and to verify the alleged presence of hidden data stealer components. The researchers confirmed that the devices send an impressive amount of usersdata to api.account.xiaomi.com, a server located in China. The information transferred by the Xiaomi device includes: Number of your phone, number of contacts, text messages and their details. Xiaomi denies all the allegations made by security experts.”]
Source: http://securityaffairs.co/wordpress/27486/security/xiaomi-handset-usersdata.html