How to use your mobile phone calculator

The calculator app on your mobile phone device can be used to perform various mathematical operations such as add, substract, multiply, divide, etc.

How to add

1. Open your calculator app.
2. Press the first number you want to calculate (for example: 1).
3. Press the plus symbol (+).
4. Press the second number you want to add (for example: 2).
5. Press the equation symbol (=).
6. Read the result (for example: 3).