OnePlus 3T. The OnePlus 3T is powered by 1.6GHz quad-core Qualcomm Snapdragon 821 processor and it comes with 6GB of RAM. The phone packs 64GB of internal storage cannot be expanded. . The OnePlus 3T runs Android 6.0.1 and is powered by a 3400mAh non removable battery. It’s one of the best mobile I have had so far