1. crav4speed's Avatar
    I didn't realize this before but there's a new field test mode for the AT&T 1520. It probably came with the Cyan firmware update. But since the AT&T branded Lumia 1520 doesn't have a way to change from 4g to 3g to 2g in cellular settings, it has to be changed using field test mode. Yesterday, I was in an area with crappy LTE so I used field test mode to switch to 3g. But instead of getting the usual 4g/3g/2g drop down menu, I was presented with checkboxes for which bands to enable and disable. There was a checkbox for HSPA 1700 which we all know T-Mo uses but it was unchecked. Unfortunately, I don't have a T-Mo sim to test if it works by checking the box but maybe someone else can if they're willing to risk it. Cool stuff!

    wp_ss_20141111_0001.jpg
    wp_ss_20141111_0002.jpg
    wp_ss_20141111_0003.jpg
    11-11-2014 02:34 PM
  2. Fred Wilson2's Avatar
    How do you get into the field test menu ?

    Thanks,
    Fred
    Captpt likes this.
    11-11-2014 03:44 PM
  3. EspHack's Avatar
    I need this, the ##3282# code doesn't work on my 928, any help with that?
    12-16-2015 11:51 PM
  4. heywhitmarsh's Avatar
    I need this, the ##3282# code doesn't work on my 928, any help with that?
    Some phones have it disabled. As far as I know there is no way to re-enable it.

    EDIT: horrendous misuse of an apostrophe.
    12-19-2015 04:37 PM
  5. heywhitmarsh's Avatar
    I didn't realize this before but there's a new field test mode for the AT&T 1520. It probably came with the Cyan firmware update. But since the AT&T branded Lumia 1520 doesn't have a way to change from 4g to 3g to 2g in cellular settings, it has to be changed using field test mode. Yesterday, I was in an area with crappy LTE so I used field test mode to switch to 3g. But instead of getting the usual 4g/3g/2g drop down menu, I was presented with checkboxes for which bands to enable and disable. There was a checkbox for HSPA 1700 which we all know T-Mo uses but it was unchecked. Unfortunately, I don't have a T-Mo sim to test if it works by checking the box but maybe someone else can if they're willing to risk it. Cool stuff!
    This has been verified and confirmed to work for a while.

    Check out this thread here
    http://forums.windowscentral.com/nok...-band-4-a.html
    12-19-2015 04:45 PM
  6. EspHack's Avatar
    well that's a bummer, we cant even fully control our phones
    12-19-2015 08:07 PM
  7. crav4speed's Avatar
    This has been verified and confirmed to work for a while.

    Check out this thread here
    http://forums.windowscentral.com/nok...-band-4-a.html
    Well, my this thread was started by me on 11/11/2014. The thread you quoted was started on 12/03/2014, approximately 3 weeks after mine. Just saying...
    12-24-2015 12:13 PM
  8. Old_Mil's Avatar
    Thanks, I will give this a try on my wife's 1520. Sadly it won't work on my 830.
    12-24-2015 02:08 PM
  9. Old_Mil's Avatar
    This worked really well. She gets 4G in a number of places my 830 is limited to edge.
    01-01-2016 10:31 AM

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