The phone came with a calculator which was great; but a week or so an update made it mostly unusable so I installed another one, which works fine. I moved the original off my home screen, I'm pretty sure I didn't delete it completely.
I would like to have the original app back on my home screen but it doesn't exist anywhere as an icon. But if I go to "Search" and type "Calculator," the original app shows up and is usable -- however there are no options to put the icon back on my home screen, or install it again, or whatever. If I move away from it, then to get it back, I have to go back to "Search" and repeat the above.