Why I can't root my phone

[AC Question]

Please help me. I can't root my Samsung Galaxy Note 4 phone without PC. Because I can't connect with PC. Now I'm download root apk and root my phone but it not work.That why please help me. I can't read in my Facebook with myanmar font .

 

[STARGATE]

Have you tried other USB cables?
Can you give us more info, sounds like more than one issue.

 

[Khunsha]

I can't root my phone,, i have tried PC method and other apps on Android but I failed,, looks like my device isn't compatible,, any idea how to root my device?