1. k1653d's Avatar
    Go to settings, general, software update and you will see the carrier file update. I did a speed test before and after update and my Internet is slower. I was getting 9mbs with 3G and only 6mbs with 4G LTE. Also notice I lost my Hotspot option and my service is a little sporadic now. I personally wouldn't recommend doing this yet as they are probably still working on it.

    http://twitter.com/ffrepairs/status/321646670603501568/photo/1

    http://twitter.com/ffrepairs/status/321646906780561410/photo/1

    Any way to downgrade back to get 3G again?

    Didn't seem to affect cydia so at least it's jailbreak safe.
    2013-04-10 01:04 AM
  2. wing103's Avatar
    yes, i believe.
    I have not try it yet, and I guess, the update just update the Tmobile carrier plist.
    How to Enable LTE on AT&T iPhone 5 for T-Mobile
    go here and fellow instruction.
    2013-04-10 02:50 AM
  3. hcgaloi's Avatar
    I on experienced a little performance improvement after the upgrade. I ran speedtest on an iPhone 4 with 3G and iPhone 5 4G LTE at the same spot. The 4G LTE was 2k/bps faster.... It made me so disappointed after all the hype ... 8-((
    2013-04-11 08:34 PM
  4. eremeya's Avatar
    2013-04-12 05:46 AM
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