Change or set owner information on Galaxy Grands and other Samsung Android phones, like S2, S3, Ace, Note, and show or hide it on lock screen by doing as follows:
1. Open "Settings" app and go to "Lock Screen"
2. No matter which screen lock method you have chosen, tap "Owner Information"
3. Right the Owner info
4. Mark or Unmark "Show owner info on lock screen" to display or hide it on lock screen