You can read e-mail attachments in a wide variety of file formats on your iPhone. Your iPhone can read several types of attachments, including the following file formats:
Images: .jpg, .tiff, .gif
Microsoft Word: .doc and .docx
Microsoft PowerPoint: .ppt and .pptx
Microsoft Excel: .xls and .xlsx
Web pages: .htm and .html
Apple Keynote: .key
Apple Numbers: .numbers
Apple Pages: .pages
Preview and Adobe Acrobat: .pdf
Text: .txt
Contact information: .vcf
If the attachment is a file format not supported by the iPhone (for example, a Photoshop .psd file), you’ll see the name of the file but you won’t be able to open it on your iPhone.
Here’s how to read an attachment:
Open the mail message containing the attachment.
Tap the attachment (it appears at the bottom of the message, so you’ll probably need to scroll down to see it).
View text from a Microsoft Word attachment.The attachment downloads to your iPhone and opens automatically.
Read the attachment.
Tap the Message button in the upper-left corner of the screen to return to the message text.