Question How to prevent a teen from creating a new user or guest profile on OnePlus Nord?

[cotp]

Hi everyone,


I have a OnePlus Nord with two profiles: a Owner profile and a Teen profile managed via Google Family Link.


The problem is: when the teen’s screen time ends, they can swipe down the notification panel and create a Guest profile or a new user to keep using the phone.


I’ve tried:

• Using ADB to disable the guest user (adb shell settings put global guest_user_enabled 0), but it doesn’t prevent creating new profiles.
• Family Link to restrict apps and settings.

What I would like :

• Prevent the teen from creating new users or using the guest profile.
• Ideally, restrict access to the notification panel or quick settings without locking me out of the Owner profile.

Has anyone encountered this issue on OnePlus devices? Are there free solutions, apps, or ADB commands that can reliably block profile creation for a teen?


Thanks in advance for your help!

Cotp

 

[VidJunky]

Welcome to Android Central forums. That seems odd that if you're hosting an admin account and a teen/restricted account that this lessor account would have the authority to create such a thing. I don't use this device or use these separate profile types so I'll ask Gemini.

I copied and pasted your post in Google and got these steps to help with your issue. Let us know if they work for you.

Your child is able to bypass Family Link's screen time limits on their OnePlus Nord because the multi-user feature on Android is separate from Family Link's supervision. While ADB and Family Link have some settings, they do not fully block the ability to create new profiles. The most reliable solution is a multi-step approach involving Family Link settings and a third-party parental control app.
Step 1: Lock down user creation in Family Link
This prevents your child from adding new users from within the Family Link interface, and is a prerequisite for more advanced locks.

1. Open the Family Link app on your phone.
2. Select your child.
3. Tap Controls > Signed-in devices.
4. Select their OnePlus Nord.
5. Turn off the Add/Remove user toggle.

Step 2: Remove the Guest profile
Your teen can still access the Quick Settings user icon to switch to or add users. Before restricting Quick Settings access, you must delete the pre-existing Guest profile.

1. On your teen's OnePlus Nord, swipe down from the top of the screen to open Quick Settings.
2. Tap the User icon, then tap the Guest user to switch to it.
3. Once in the Guest profile, swipe down again and tap the User icon.
4. Select Remove Guest.

Step 3: Block access to Quick Settings
This prevents your teen from accessing the user-switching option in Quick Settings and from enabling unwanted settings like Wi-Fi or Bluetooth to bypass app restrictions.

1. On the Owner profile, go to Settings > Apps > See all apps.
2. Tap the three dots menu in the top-right corner and select Show system.
3. Search for and open System UI.
4. Go to Mobile data & Wi-Fi or Network settings and disable it. This will prevent your teen from accessing the Quick Settings menu.

Step 4: Use a third-party app
For more comprehensive control and to lock down system settings entirely, a specialized parental control app is the most effective solution.

1. On the Play Store, find a parental control app that can lock down system settings. Popular options include Kids Place, Boomerang, or Qustodio.
2. Install the app on your teen's phone (you may need to grant it accessibility permissions).
3. In the app's settings, lock access to the phone's Settings app. This prevents your teen from changing any of the device's main system options.
4. Block or restrict the app's access to the Notification Panel and Quick Settings.

Alternative: Use ADB to disable multiple users (Requires root)
For users with advanced skills, you can permanently disable the multi-user feature, but this requires rooting the device and can be complex.
Warning: Rooting your device can void the warranty and carries risks if not done correctly.
To perform this action:

1. Ensure your OnePlus Nord is rooted.
2. Connect the phone to your computer with USB Debugging enabled.
3. Open a terminal or command prompt and run the following commands:
   • adb shell su setprop fw.max_users 1 (limits the number of users to one)
   • adb shell su setprop fw.show_multiuserui 0 (removes the user switch UI)
4. This should prevent any new user or guest profile from being created.