Is my profile private? If not how can i make it private?

I'm using iphone

On the green YA it is not private you can try this Change to desk top first. On the new YA (purple) this is all you can do. Go below.

Click on the wrench right side in your profile window.
Under Sharing and Network. Choose.
Share my QnA with
"Everyone", "whom I follow and followers, or "whom I follow only"
next line:
Share my Answers network with: Everyone", "whom I follow and followers, or "whom I follow only"

A Contact is someone you follow.
Fan is someone who follows you.
Click save at the bottom. To completely hide your activity from everyone you must have no followers.
On the old YA (green). Click your avatar then click edit my preferences.

Next click Privacy & Communications
Check your preferences. My personal preferences. I allow fans but don't add them to mine. If someone adds you as a contact they are your fan but can't see your questions or answers unless you add them back if you are set to contacts only.
Submit when done.