If you are looking to install WhatsApp on your iPhone 6, there are a few things you need to take into account. First and foremost, you will need to have an iPhone 6 or later. Second, you will need to have a WhatsApp account. Finally, you will also need to be sure that your phone is compatible with the app. To begin, first head over to the App Store and search for WhatsApp. Once found, tap on the link below and follow the instructions onscreen. Once complete, your phone should be able to install the app. Once installed, open WhatsApp and sign in using your username and password. You can also use this same process if you have an existing Facebook or Google account for WhatsApp. Once signed in, you can start using WhatsApp by selecting it from the main menu in the top left corner of your screen.