Open a Keynote presentation on iPhone
You can open Keynote presentations saved on your iPhone, in iCloud Drive, on connected servers, in other third-party storage providers and on an external storage device that’s connected to your iPhone. You can open and edit Microsoft PowerPoint presentations (files with a .pptx or .ppt filename extension) in Keynote, then save them as Keynote or PowerPoint presentations.
Note: When you open a presentation saved in iCloud Drive, it’s automatically downloaded to your device.
Open an existing presentation in Keynote
Go to the Keynote app
on your iPhone.If a presentation is already open, tap
in the top-left corner to see all your presentations.Tap a thumbnail to open a presentation.
If you can’t see the presentation you want to open, try searching for it, or tap Browse, Shared or Recent at the bottom of the screen. See Find a presentation.
To make changes to the presentation, you may need to tap
at the top of the screen.Presentations you receive from someone may open in reading view. In reading view you can view content and perform basic tasks in the presentation, but to make any changes, you must switch to editing view. If you can’t see
at the top of the screen, then the presentation is already in editing view. See Prevent accidental editing.
When you open a presentation that uses fonts that you don’t have, a missing font notification appears briefly at the top of the slide. If you want to replace the missing fonts, tap the notification, tap Resolve Font Warnings, then tap Resolve. If the notification is no longer visible, tap 
, tap Presentation Options, tap Show Document Warnings, tap Resolve Font Warnings, then tap Resolve.
To install a new or missing font on your iPhone, you can download it from the App Store. See the iPhone User Guide for instructions.
Note: Some themes aren’t downloaded to your device until you choose them or open a presentation that uses one. If your connection is slow or you’re not connected to the internet when this happens, placeholder images and slide backgrounds in the presentation may appear at a lower resolution until you’re online again or the theme finishes downloading.