Pages

Manage sender information in Pages on iPhone
If you have sender merge fields in your document, you can choose a card from Contacts to populate the fields.
Choose sender field information
Go to the Pages app
on your iPhone.
Open a document with existing merge fields, tap
at the top of the screen, tap Mail Merge, then tap Merge.
Tap Select Contact, then choose a card from Contacts.
For more information on Contacts and your My Card information, see the iPhone User Guide.