title: FIrebase Phone Authentication supported countries?
body: <p>Does anyone know if Firebase Phone Authentication works for India phone numbers?</p>
  
  <p>I successfully implemented and to work for US numbers (<code>+1xxxxxxxxxx</code>), but the text not received when I tried with an India phone number. Wasn't sure if it didn't work or I was missing something. I send as <code>+91xxxxxxxxxx</code>. </p>
  
  <p>Digits previous blog discussed <em>US vs India analytic enhancements</em> for adoption, so I assume India is supported.</p>