Hi guys! This video will show you how to fix Call Blocking and
identification missing from Settings app on iPhone after iOS 14 Update.
Method 1. Turn On Allow Apps to Request to Track
To do this, go to Settigns.
Find and tap Privacy.
Then tap on Tracking.
Here turn on Allow Apps to Request to Track if its turned off.
After that, check Call Blocking and Identification has been
reappeared.

Method 2. Delete and Reinstall the App.
First, uninstall the app which uses call blocking and identification. In
my example, I use Whoscall app.
Then reboot your iPhone.
Once done, reinstall the app. Now this option has reappeared.

Method 3. Check for Software Update.
First, make sure your iPhone is connected to WiFi.
Go to Settings app.
Scroll down and tap on General.
Next tap on Software Update.
If Software Update is available, tap Download and Install