Hi I am Rupesh from India and yesterday I have bought xiomi redmi note 4 which has 64 internal memory and snap Dragon processor. I have some music files in my pc and I want to transfer them to internal memory of my phone. At present I have installed Windows 8.1 pro on my pc. when I connect the phone to the computer using original usb cable provided the phone is displaying message as connected for charging only and tap for other options and when I tap there's no entry for usb mass storage. As the phone is connected in mtp mode file transfer is very slow and also when I try to recopy a directory from pc to phone it is copying all files again instead of skipping already done. I have tried copying with other tools in Windows like tera copy, rich copy, rockdils unstoppable copier etc., but there's no use I mean I am unable to copy as I can't find entry of the phone like redmi note 4. Some of the tools specified above can transfer long filenames but they are expecting a path starting with drive letter like d:/ In order to mount internal memory as usb mass storage the phone needs to be rooted but when I try to root the device my device warranty may become invalid. Please suggest how to copy files with long filenames to my phone internal memory. Regards, Rupesh.