Xiamoi Mi 4i was a good mobile but it was not good also it has many problems because I was also facing in this time many problems just like as when I was playing any game or use anything in the mobile then it was too much heated in the back and when I charging this mobile then also it was too much heated and its flashlight was a yellow flash by this not too good photos are taken by this mobile phones and in this main problems was that only we use internet by sim1 because in this mobile only in the sim1 data option are available and not present data option in the sim2 it was main defects of Xiamoi Mi 4i.