On what app is the calculator on my phone?

What brand and model of phone?

On an iPhone, the calculator icon looks like this:

http://icons.iconarchive.com/icons/tristan-edwards/sevenesque/1024/Calculator-icon.png

Hold it in portrait orientation (up and down), and it'll be a simple calculator.

Turn it sideways (landscape orientation), and it'll be a scientific calculator.

To find the calculator app on your phone, you can follow these general steps:

1. Locate the home screen or app drawer: On most smartphones, you will find the home screen by pressing the home button or swiping up from the bottom of the screen. The app drawer is usually an icon that resembles a grid of dots or squares and can be found either on the home screen or by swiping up or down.

2. Search for the calculator app: Once you are on the home screen or in the app drawer, look for an icon that resembles a calculator. The icon may vary depending on the phone's make and model, but it is commonly a square with numerical buttons and basic mathematical symbols like "+", "-", "*", and "/".

3. Tap the calculator app: When you locate the calculator icon, tap on it to open the app. This will launch the calculator, enabling you to perform mathematical calculations right on your phone.

If you are having trouble finding the calculator app or if it is not available on your phone, you can also try searching for "calculator" in the search bar or app store of your device to install a calculator app from a trusted source.