I'm not familiar with Motorola but I used China Telecom's 3G dongle and was amazed by the amount of sneaky tracking they were doing. Frequently, I could see (in Chrome web inspector) that random pages were wrapped in iframes, with extra JavaScript for tracking. The JS was pinging Chinese servers and sending visited pages, clicked links, and who knows what.

Any Chinese software you install will do something similar. You install one software (for instance, a popular messenger like QQ or some online banking software) and get half a dozen processes and services running all the time with admin privileges (which they've asked during installation).

It's a mix of carelessness and greed, and there's no limit to it since consumers here don't have much power to change anything. That's why I'd be careful with a Chinese smart phone.