for iPhone they have tutorials same with Samsung
I know how to mod on Samsung for 2.1.1. all you do is download the game them go to ur files and then go into android then click onto obb there u will see your wolf online file. click and hold on the file then go to the three dots and look for rename and don't delete anything just add some random thing. then go to where your general game is and delete it the file will not be deleted. then download your mod and install is then go back to files before you open the game and go to your wolf online folder again and go to rename again then just remove what YOU added then press ok. then enter your game and there you have your mod
mod sujestions: phoenix mod. xmas mod