Snapchat is a messaging app that is popular among millennials. It has been around since 2011 and it has over 2 billion active users. The app is available on Android and iOS. To use Snapchat on Android, you first need to create an account and then sign in with your phone number. After you sign in, you can find the “Photos” tab on the main screen. You can select any photo you want to upload to Snapchat. Once you select a photo, you will see a “Upload” button at the bottom of the screen. You can click on this button to start uploading your photo to Snapchat. Once your photo is uploaded, it will be visible on Snapchat for everyone who has an account with the app. If someone else has already added your photo to their account, they will be able to see it first before you do. If someone wants to add your photo later, they can do so by going back into their account and selecting “Photos” from the main screen and then clicking on “Add To Account.”