Google Voice collects approximate location, app interactions, in-app search history, and shares some of this with third parties.
Approximate location
App functionality, Analytics, Fraud prevention, security, and compliance, Account management
App interactions
App functionality, Analytics, Developer communications, Personalization
In-app search history
App functionality, Analytics, Personalization
Other user-generated content
App functionality, Analytics
Voice or sound recordings
App functionality
Music files
App functionality
Other audio files
App functionality, Account management
Purchase history
App functionality, Account management
Other app performance data
Analytics
Files and docs
App functionality
Photos
App functionality, Account management
Device or other IDs
App functionality, Analytics, Personalization, Account management
Contacts
App functionality, Analytics, Personalization, Account management
SMS or MMS
App functionality, Fraud prevention, security, and compliance
Other in-app messages
App functionality, Analytics
Name
App functionality, Developer communications, Account management
Email address
App functionality, Analytics, Developer communications, Fraud prevention, security, and compliance, Account management
User IDs
App functionality, Analytics, Developer communications, Fraud prevention, security, and compliance, Personalization, Account management
Address
App functionality, Fraud prevention, security, and compliance, Account management
Phone number
App functionality, Analytics, Fraud prevention, security, and compliance, Account management
Other info
App functionality, Account management