WhatsApp shares the following: information with Facebook and its other companies:
account registration information (phone number), transaction data (WhatsApp now has payments in India), service-related information, information on how you interact with others (including businesses), mobile device information, and IP address. It is also collecting more information at a device hardware level now.
Is WhatsApp stores messages?
Yes, this is standard practice for most software. If you don’t want to, you can delete your account and switch to another service.
A lot of people seem to be switching to Signal from WhatsApp.
Signal is another messaging app, free and end-to-end encrypted, and which has gained a popularity after new WhatsApp policy. WhatsApp uses Signal’s protocol for its encryption. But Signal is not owned by any corporation, and is run by a nonprofit.