Hello, somebody help me with my slowing down problem of my Xperia XZ. It was around a month ago when I purchased my unit and after I think 2 weeks I already experiencing slowdown with my unit. At first I just tried to use my extra micro SD card instead of utilizing my second SIM card. So I purchased a second phone thinking that it would help improve the performance if I used my micro SD card and remove my second SIM. But unfortunately the problem still recurs. BTW I am using a SanDisk micro SD card.