Method 2: For rooted Devices: Install Notification cleaner app
For this you will need to root your Android and also install Xposed framework. Most rooters will know how to do this.
Install Notify Clean and open it
Scroll down and tap “Phone”
Tap on “Restricted access changed”
Now reboot device and the phone notification will be blocked
Did any of the above method fix this notification error on your Android phone? Do you have any other alternative methods or solution? Drop a comment below.