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.



    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