You can now fill out structured PDF forms within the Google Drive app on Android and iOS devices. You’ll be able to complete text fields, select options from a dropdown menu, and select checkboxes or radio buttons. After filling out the form, you can save your edits as a new revision of the document, or save a copy.
This feature makes it quicker and easier to complete business invoices, event registrations, tax forms and other types of simple forms. This eliminates the need to print, fill-in by hand, and re-upload the document, saving you time.
To begin filling out a form, tap the pencil button in the PDF preview or tap the form field directly. When you’re done, save edits or save a copy of the form.
Note that this feature is not available on XFA forms, and does not support e-signature.
Complete basic PDF forms directly in Google Drive on mobile functionality may take up to 15 days to appear in your @berkeley.edu account.
Source: G Suite Updates Blog