A Chinese no-name Galaxy S4 knock-off allegedly comes pre-loaded with spyware:
For the first time ever, the experts at the German security vendor have discovered a smartphone that comes with extensive spyware straight from the factory. The malware is disguised as the Google Play Store and is part of the pre-installed Android apps. The spyware runs in the background and cannot be detected by users. Unbeknownst to the user, the smartphone sends personal data to a server located in China and is able to covertly install additional applications.
The news comes from a security firm, so take it with a grain of salt, but still - this is exactly the kind of stuff legitimate Chinese manufacturers really do not want.