"We'll send you a pin to verify number" pop up
Samsung Note 8
Since I restarted my phone this morning, I'm getting a full page pop up, white in color, with a heading stating "We'll send you a PIN to verify number". Then again in smaller script the same words "We'll send you a PIN to verify number" and a box that says "Enter AT&T phone number". I instantly feel this is a hacker attempt and a Facebook search shows others have begun to post about getting this too. How can I handle this and clear it from popping up on my device?