I just purchased a ZTE Z830 Compel with the Kit Kat OS. The phone comes set up with 3 blank home screens with the ability to add additional home screens. I accidently created 2 additional blank home screens which I do not need or want at this time. How do I delete the unneeded blank home screens? The user manual, etc. does not tell how to do this. Thank you for any help you can give.