how to change file format in android phone without any app

some video format not support in android like flv etc.so here i am teach you to how to open any video file by change his file format.if your video file format is flv so this is not open directly in file manager you go to mx player and open this file so this trick solve your problem.

1. first you go to the file manager and check which fiel not supported like we are one songs not supported in my phone because this is flv format.
   
   
2. so you rename this file and you see in last of the name .flv so you change this and write .mp4
   
   
   
    
3. yoy write .mp4 and click ok then you see the message so you click ok
   
   4. then you click ok you see we are one song supported on your phone.
   
   
   5.now you open this song by mx player.
   
   
   6.if you face any problem please comment below