Find the Twitter application, and tap on it once to open the application
The Twitter application has a blue background with a white bird on it, with the word "Twitter" underneath it. Your Twitter application may be in a different position in this folder, therefore you will need to find it.
We might have different options if we're in a city, or it might be a country depending on how it knows where we are. As we can see, it has added a pin icon next to the location we've chosen which means when we send a tweet it will have this location in it.