When I connected to my m2 note phone to laptop using mtp.
The files will be Showing on my computer. Then I copied some files to PC. After I removed my phone from laptop through safely remove or eject.
All files in my phone will be lost.
Another problem is that when I switched off my phone for one hour, after I switched on my phone and go to files manager and we can see that all files will be gone.
Another problem is memory.
When I sent some videos, for example the film named the karate kid send to my phone size of 1 GB. After using my phone for one day. My karate kid film files turns to zero KB.
There is no films occur only name and 0kb