Dear community, i'm a new grapheneOS user (just installed) and planning to migrate soon, i need some suggestion about maximize my privacy/security on RCS and Whatsapp (unfortunately in the real world adoption of Signal or SimpleX are too low).
1) I noticed that WA used as a linked device do not propose new contacts on the actual phone. The sync contacts seems to be from the primary device that i keep off all the time (just ON for resigning once o twice per month).
Would using RCS and WA as linked app give any benefit in terms of privacy?
2) I'm planning to use WhatsApp in the work profile (with play serives deployed only on it) and keep it ON only when needed, is the same approach possible for the sms/rcs app (eg. Google messages) or this must be on the main profile?
Any other suggestion is welcome.
Eg. Alternative apps providing rcs (to my knowledge only google and Samsung messages)