I do the same for my work phone and laptop. (The laptop Windows lock screen is the mandated company logo screen -- making it easy to see if the computer has bee

I do the same for my work phone and laptop. (The laptop Windows lock screen is the mandated company logo screen -- making it easy to see if the computer has been locked when you've left your cubicle.) My tablets have a grey "smoke" background. I'll sometimes do it with my personal phone and computers; but, I tend to change those every so often.