Step 1: First, to open Excel files on iPhone you need to download the Microsoft Excel application for iPhone to your computer. Instructions on how to open Excel files on iPhone That’s why Taimienphi today will guide you how to open Excel files on iPhone in a simple way, let’s follow along with the following. You can use your own iPhone and iPad to quickly create data spreadsheets and send them to customers promptly. Among them, there are many applications for office work, especially using Excel files at work when it is an indispensable application for many people. Since its inception, the iPhone has become one of the most intelligent mobile devices with a huge, diverse and rich library of applications in all genres.