How to use a phone

First, if you want to turn on the phone, you can push and hold Dial key button. If you want to turn off, push and hold End key button.
Next, if you want to call or end the call, push Dial key button or End key button.
Finally, if you want to change the language of your phone, go to "Settings", then find and select "Language". In "Language", you find and choose the language you want to change, then push "OK" button and end. You have changed the language of your phone.