@Randombychoice
Hello!
There’s a good chance your phone is infected with malware and there’s a few solutions to the problem.
Firstly, navigate to your settings, go to each and every app you have, and disable their permissions to use your contacts.
If that doesn’t help, delete any apps that you would think would use your contacts and when you reinstall them make sure not to give them permissions.
Thirdly, make sure to remove any public wi-fi networks from your phone as it is possible your data is being shared. Also, when using public wi-fi networks, never use your phone to do anything private such as banking.
Finally, if none of these solutions work, back up your photos and videos to Google Photos (or alternative), your documents to Google Drive (or alternative), and factory reset your phone but not from backup since your phone most likely has saved networks and permissions in its backup.
Does it suck that you have to download all your apps again? Yes, but it’s better than being the target of malware attacks.
Hope this helps!
