Make the Whitelist more clear to the user. This can be done with the use of descriptive headers and modifying the display of numbers saved to the Whitelist. For example, you could include a header reading "YOUR LIST" with the saved numbers following below. Other potential improvements: fixing the "SAVE NUMBER" button so that the 'R' doesn't run over onto the next line in vertical view orientation, make it clear which line is for saving text and which is for saving a number, create a divide between the area to add a number and the list of saved numbers itself, etc.
Make the Whitelist more clear to the user. This can be done with the use of descriptive headers and modifying the display of numbers saved to the Whitelist. For example, you could include a header reading "YOUR LIST" with the saved numbers following below. Other potential improvements: fixing the "SAVE NUMBER" button so that the 'R' doesn't run over onto the next line in vertical view orientation, make it clear which line is for saving text and which is for saving a number, create a divide between the area to add a number and the list of saved numbers itself, etc.
~estimated 200