[header] How to get a new custom interface on your galaxy [title] Get nova launcher. [step] Nova launcher can be downloaded for free on google play. [title] Set nova launcher as default launcher. 
[step] After installing nova launcher, hit the home button on your galaxy device to bring up the prompt that will let you choose which launcher to use every time you press the home button. Select nova launcher from the options, and tap " always " at the lower right corner of the pop-up.