Kryptowire researchers have found a service that send sensible data to some weird servers in China.
Destination is Shangai, all those information (calls, history, sms, position) are collected through a backdoor, that has been found on a populare device in the US, the BLU R1 HD. This backdoor has been written by Shangai AdUps Technology for ads purpose.
This, at the moment, has been fixed and the backdoor removed. Google has alerted Shangai AdUps Technology to stop this kind of advertisment and to remove the backdoor from all Android devices outside China.