In one sentence, describe what the following article is about:

If you don't have the T-Mobile app installed, you can download it from the Apple App Store or the Google Play Store. If you haven't set up your T-Mobile account and password yet, tap the "Sign Up" button and follow the prompts. You'll need to be the account holder in order to change the Web Guard settings. This will open the app menu. Your account profile information will be displayed. You'll have to scroll down to find it. This will disable the Web Guard restrictions.

Summary:
Open the T-Mobile app on your phone. Log in with your T-Mobile account information. Tap the Menu () button in the upper-left corner. Select "Profile Settings" from the menu. Tap the "Family Controls" option. Select "No Restrictions" and tap "Save."