How to Find Your SIM Card Serial Number On Android ?
Step 1: Open Play Store.
Step 2: Type "Mobile, Sim and location info" in search box.
Step 3: Install this App.
Step 4: Open the App.
Step 5: Go to "Sim" section and scroll down.
Step 6: you will see your SIM card Serial Number.
It's done.
Why would someone need this?
Even if SIM is corrupted they can get SIM number by using this APP and give it to the Telephone company and get the new SIM