1) Enable phone Developer Mode:
go to apps setting, -->about phone -->software informtion
There is a "Build Number" there, 用手指在上麵拍幾下,直到看見 developer mode enabled.
2) go to app setting again, scroll down, you will find "developer options" , go there ..
schroll down .. you will find " default USB configurations" , go there ..
choose " Transferring files" as default.
After these, connect your phone through USB connection to PC, on you phone, you will see msg: allow to access files on phone? choose yes.
You will see the files on your phone on your computer !
You can change to default USB configuration back to charging mode after that by following the step 2 above.
Good Luck!