I use my phone for quite a multitude of different things especially groceries. I have a gallery of quilts for ideas and color placement. Apps for hobbies, apps for work related, Notes for birthdays and amount of money sent for each special occasion (helps with budget for holidays, who gets what amount). Most of the time I know what my bill is going to be by the time I get to any register. I also note my family's favorite colors and things to do.