AT&T has released a new over-the-air software update for the Galaxy S4 Mini which introduces support for voice-over-LTE calls, as noted by Android Central. The update also includes the ability to dial 911 without a SIM card in the phone.

VOLTE Software Update Includes

  • VoLTE inter-op call hold
  • SIM less 911 Dialing update
  • ISIM SQN re-sync for VoLTE reregistration
  • v4v6 for IMS PDN while roaming

You can grab the update for yourself by opening the Software Update screen in the Settings app.

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