Sprint may be rolling out an update to the Galaxy S4 today, but AT&T customers are not to be left out. The company is distributing an update to version I337UCUAMF3, which is not the same as that going out to Sprint users. While it's 359MB file size is remarkably similar, it ushers in a different set of bug fixes. The update also enables two additional LTE bands and improves NFC. Aside from that, there's nothing else particularly exciting to see here.


The update should fix issues with rebooting, WiFi compliance, and other pre-installed applications. Bug fixes don't get our mouths watering, but they're essential, so it's nice to see them.

Version MF3 includes:

  • Enable LTE Bands 2 & 5 NFC
  • Broadcom Chipset firmware update
  • Reboot issue fix
  • Drive Mode SMS fix
  • Wi-Fi compliance fix
  • Email/Calendar fix

This is an over-the-air update, so there aren't any hoops to jump through to get it installed. It might be nice to have a WiFi connection handy, considering the large file size. Better safe than sorry.

Source: Samsung

Bertel King, Jr.
Born and raised in the rural South, Bertel knows what it's like to live without 4G LTE - or 3G, for that matter. The only things he likes sweeter than his tea are his gadgets, and while few objects burn more than a metal phone on a summer day, he prefers them that way anyway.

  • ProductFRED

    What the hell does "LTE Bands 2 & 5 NFC" mean?

    • N8

      Probably an unfortunate break in the bulleting, it's probably supposed to read:

      - LTE Bands 2&5
      - NFC Broadcom Chipset firmware update

  • Logan Jinks

    you missed the "move to sd card" function

  • Alex

    If i travel to usa and i connect to atyt network via roaming do i receive the update on my s4?, because i still havent received it in my country

  • Eric Sherwin

    Appears to also include a camera firmware update.

  • Andrew

    Does it fix the talkback and gallery issues when any app switches on the accessibility service?

  • http://robert.aitchison.org raitchison

    Really you should warn people that this update breaks root.

  • Falco1030

    Will this OTA fix the heating issue too?

  • Shingo Tachibana

    Please, note somewhere that this breaks root and this version is currently UNROOTABLE. It also flashes a new sbl2, sbl3, and aboot; whether this busts Loki remains untested.

  • Chris Noland

    I am going to concur with Shingo that the article should note it breaks root or don't install until if you have root / think you may want to root until it is confirmed what it does. On the flip side... if you have root... you should be smart enough to figure out this has a good chance of breaking it. Just another reason why I have not bought the device (locked bootloader) :-(

  • duh

    why should someone have to warn you about root breaking? LOL. I've used my phone outside of it's official parameters so it's someone elses duty to warn me my hack might now work? ha.

  • JKR

    My GS4 stopped recognizing the SIM card after installing this update. Took it to two AT&T stores for help. A new phone is on the way.

  • Sabby

    Has anyone had this update install and it has disabled the gallery? I can't see my photo albums nor can I update photos to FB/IG/etc.

  • dan

    is this verson rootable i tried rooting and i cant? any 1 know any good rooting guide?