Hi i have a Mi-2 32 GB model from ShenZen Funtek Co. Ltd also from aliexpress. I did the quick system info app test and all seems fine, but my battery life is terrible. I have gps, wifi, bluetooth, autosync all off and brightness is at zero and still i get rapid battery drain. Deep sleep seems fine its just when i am using the handset. I see jumps from say fully charged 100% to 97% after 5 mins then after 10 minutes its down to 93%. What should i do, do i have a fake Mi-2, please someone help me. Ps im in Lonndon, UK.