While Google is mainly collecting online identifiers (cookie identifiers, internet protocol addresses, and device identifiers) precise location data, and client identifiers, Facebook is collecting device attributes, device operations, identifiers, device signals, data from device settings, network and connections, and cookie data.
Here what Facebook specifies on the Instagram Data Policy:
Device attributes: information such as the operating system, hardware and software versions, battery level, signal strength, available storage space, browser type, app and file names and types, and plugins.
Device operations: information about operations and behaviors performed on the device, such as whether a window is foregrounded or backgrounded, or mouse movements (which can help distinguish humans from bots).
Identifiers: unique identifiers, device IDs, and other identifiers, such as from games, apps or accounts users use, and Family Device IDs (or other identifiers unique to Facebook Company Products associated with the same device or account).
Device signals: Bluetooth signals, and information about nearby Wi-Fi access points, beacons, and cell towers.
Data from device settings: information users allow Facebook to receive through device settings users turn on, such as access to your GPS location, camera or photos.
Network and connections: information such as the name of your mobile operator or ISP, language, time zone, mobile phone number, IP address, connection speed and, in some cases, information about other devices that are nearby or on your network, so Facebook can do things like help you stream a video from your phone to your TV.
Cookie data: data from cookies stored on user’s device, including cookie IDs and settings.
On WhatsApp here the information collected:
Account Information: Users provide the mobile phone number and basic information (including a profile name) to create a WhatsApp account. Users provide the phone numbers in the mobile address book on a regular basis. Users may provide WhatsApp an email address. Users may also add other information to the account, such as a profile picture and about information.
Messages: Facebook do not retain the messages in the ordinary course of providing services. Once the messages (including chats, photos, videos, voice messages, files, and share location information) are delivered, they are deleted from the servers. Your messages are stored on users device. If a message cannot be delivered immediately (for example, if a user is offline), Facebook may keep it on our servers for up to 30 days as WhatsApp tries to deliver it. To improve performance and deliver media messages more efficiently, such as when many people are sharing a popular photo or video, Facebook may retain that content on our servers for a longer period of time. Facebook also offer end-to-end encryption for the WhatsApp services, which is on by default.
Connections: Facebook helps users to identify the contacts that also use WhatsApp, and users can create, join, or get added to groups and broadcast lists, and such groups and lists get associated with the account information. Users can give groups a name. Users may choose to provide a group profile picture or description.
Payment Services: Users that use the payment services, Facebook processes the purchase and transaction information.
Customer Support: Users may provide Facebook with information related to your use of our Services, including copies of the messages.
Usage And Log Information: Facebook collects information about user activity on Services, like service-related, diagnostic, and performance information. This includes information about user’s activity (including how users use the Services, the Services settings, how users interact with others using Facebook Services, and the time, frequency, and duration of user activities and interactions), log files, and diagnostic, crash, website, and performance logs and reports. This also includes information about when a user registered to use Facebook Services, the features users use like our messaging, calling, Status, or groups features, profile photo, about information, whether users are online, when users last used Facebook Services (your “last seen”), and when was a user last updated their about information.
Device And Connection: Facebook collects device and connection-specific information when a user install, access, or use the Services. This includes information like hardware model, operating system information, battery level, signal strength, app version, browser information, and mobile network, connection information including phone number, mobile operator or ISP, language and time zone, and IP, device operations information, and identifiers like device identifiers (including identifiers unique to Facebook Company Products associated with the same device or account).
Location Information: Facebook collects device location information if a user uses the location features, like when users choose to share the location with the contacts, view locations nearby or those others have shared with another user, and the like, and for diagnostics and troubleshooting purposes such as if a user are having trouble with our app’s location features. Facebook uses various technologies to determine location, including IP, GPS, Bluetooth signals, and information about nearby Wi-Fi access points, beacons, and cell towers.