A little birdie told us to look out for Huawei at the Mobile World Congress next month! According to the rumor mill, Huawei will be launching a new series of Android devices in the US shores, named Diamond. Compared to previous models, Huawei claims that this new line of smartphones will ‘take performance a step higher.’ Considering that Huawei left a huge impact last CES 2012 with their thinnest smartphone, we can really expect this upcoming line to live up to its promise. Not to mention, the latest Huawei devices already run on Android 4.0 and boast their features including …