title: Check entered phone number in app like whatsapp
body: <p>How I can check the phone number entered in the app is current phone number like whatsapp to verify phone number?</p>
  
  <p>This option realized in whatsapp, when you login this moment verify process starts and check if your phone number from sim card is equal to entered phone number it is OK! If you use another phone number user with this another phone number gets sms with code to verify this phone number on your device.</p>
  
  <p>Thanks!</p>