That’s the biggest tell. Everything looks suspiciously “samey”

Also the hair is very odd and the heads are too small for the bodies.

And the phones have weird extra spots above and below the offset camera

And the fact two people are taking the selfie at all is bizarre.

• One – Obvious.
• Multiple but spaced out over time – Maybe strange, but makes some sense if you want to use them locally and don’t want to wait to have it sent to you.
• Everyone doing it – Makes sense as a humorous gimmick.
• Exactly two people out of a group of five?
  • As you said, same phone, so zero technical quality difference.
  • Basically the same angle.
  • The rear one will probably capture the first phone in her shot.
  • Looks stupid as fuck.