How can i keep my texts messages private from anyone on the same account and primary account holder?
Go to Correct Answer
The content of the messages is private, unless you have already given them access via Messgaes + or handed over your phone.
As far as who you texted (numbers) and dates and times, the account owner has acess to that as they are the responsible paying party.
Are you concerned about the content of messages, or who the messages are being exchanged with?
If you want complete privacy, the best solution is to have your own account.