Show my caller ID spinning wheel issue

Many iPhone users have experienced the issue that they cannot switch off or on "Show my Caller ID" as it goes to endless hanging loop. Apple has provided a solution but that a long, complicated process to re-install iOS as it needs to connect to Mac or back-up to iCloud (costing money if iPhone has lot of data).

The Quickest and easiest solution is:

1. Switch off Wi-Fi
2. Switch off Mobile Data
3. Now go to Settings --> Phone --> Show My Called ID --> Switch it ON/OFF as you need
4. Once done, you can switch ON WiFi and Mobile data back again.

Enjoy!