In the top menu, tap your profile photo, then tap Settings and privacy.
Tap Privacy and safety.
Under Audience and tagging, and next to Protect your Tweets, drag the slider to turn on.
When you sign up for Twitter, you can choose to keep your Tweets public or protect your Tweets. Read more about the difference between public and protected Tweets.
In the top menu, tap your profile photo, then tap Settings and privacy.
Tap Privacy and safety.
Under Audience and tagging, and next to Protect your Tweets, drag the slider to turn on.
In the top menu, you will either see a navigation menu icon or your profile icon. Tap whichever icon you have and select Settings and privacy.
Tap Privacy and safety.
Under Audience and tagging, and next to Protect your Tweets, check the box.
Click or tap on the more icon.
Go to your Settings and privacy.
Go to Privacy and safety.
Go to Audience and tagging, and next to Protect your Tweets, check the box.