[RESOLVED] No LTE on non-stock configurations - AT&T HTC One (M7)

Code:
C:\ADT\sdk\platform-tools>fastboot getvar all
(bootloader) version: 0.5
(bootloader) version-bootloader: 1.54.0000
(bootloader) version-baseband: 4T.29.3218.08
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main: 6.09.401.5
(bootloader) version-misc: PVT SHIP S-OFF
(bootloader) serialno: HT36NW902539
(bootloader) imei: 354439057974893
(bootloader) meid: 00000000000000
(bootloader) product: m7_ul
(bootloader) platform: HBOOT-8064
(bootloader) modelid: PN0712000
(bootloader) cidnum: CWS__001
(bootloader) battery-status: good
(bootloader) battery-voltage: 3736mV
(bootloader) partition-layout: Generic
(bootloader) security: off
(bootloader) build-mode: SHIP
(bootloader) boot-mode: FASTBOOT
(bootloader) commitno-bootloader: dirty-5d4c562c
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
finished. total time: 0.065s
I bought the phone and was pretty excited to get to use it, so I tested the functionality of the phone quickly with stock, decided that it was bleugh, and began S-OFFing, unlocking, and flashing. Didn't take long, but it didn't help that my HBOOT was 1.57 stock.
That said, LTE worked with my stock firmware, not with the new ROMs or radio firmware. I've tried many different combinations of m7_ul firmware and roms to no avail. In every APN besides "pta," data works in HSPA+ and 3G at least.
Has me very stumped - I've tried many different APN settings, but I'm welcome to even more in hope that one might work.

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Reacon said:
Code:
C:\ADT\sdk\platform-tools>fastboot getvar all
(bootloader) version: 0.5
(bootloader) version-bootloader: 1.54.0000
(bootloader) version-baseband: 4T.29.3218.08
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main: 6.09.401.5
(bootloader) version-misc: PVT SHIP S-OFF
(bootloader) serialno: HT36NW902539
(bootloader) imei: 354439057974893
(bootloader) meid: 00000000000000
(bootloader) product: m7_ul
(bootloader) platform: HBOOT-8064
(bootloader) modelid: PN0712000
(bootloader) cidnum: CWS__001
(bootloader) battery-status: good
(bootloader) battery-voltage: 3736mV
(bootloader) partition-layout: Generic
(bootloader) security: off
(bootloader) build-mode: SHIP
(bootloader) boot-mode: FASTBOOT
(bootloader) commitno-bootloader: dirty-5d4c562c
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
finished. total time: 0.065s
I bought the phone and was pretty excited to get to use it, so I tested the functionality of the phone quickly with stock, decided that it was bleugh, and began S-OFFing, unlocking, and flashing. Didn't take long, but it didn't help that my HBOOT was 1.57 stock.
That said, LTE worked with my stock firmware, not with the new ROMs or radio firmware. I've tried many different combinations of m7_ul firmware and roms to no avail. In every APN besides "pta," data works in HSPA+ and 3G at least.
Has me very stumped - I've tried many different APN settings, but I'm welcome to even more in hope that one might work.
Click to expand...
Click to collapse
Are you using this phone on an AT&T network or other? The AT&T LTE Frequencies are not compatible with other networks and as a result will not work.

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Solarenemy68 said:
Are you using this phone on an AT&T network or other? The AT&T LTE Frequencies are not compatible with other networks and as a result will not work.
Click to expand...
Click to collapse
Forgot to mention that I am using ATT, on an ATT phone. Plus it should have been apparent when I stated it worked with stock.

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Reacon said:
Forgot to mention that I am using ATT, on an ATT phone. Plus it should have been apparent when I stated it worked with stock.
Click to expand...
Click to collapse
from the phone dialer dial *#*#4636#*#* choose Phone Information near the bottom " Set Preferred network type:"
set it to GSM/WCDMA/LTE auto

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clsA said:
from the phone dialer dial *#*#4636#*#* choose Phone Information near the bottom " Set Preferred network type:"
set it to GSM/WCDMA/LTE auto
Click to expand...
Click to collapse
After much experimentation, I went back to stock, and I still can't use LTE! I configure the APN perfectly, and try to set the Testing Menu to anything with LTE as an option and it just doesn't connect.

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Welp. I finally took it back to square one and called ATT.
Turns out they never updated my phone's IMEI from my TMo phone, which apparently means they had LTE disabled, and when the new phone was connecting to the network for the first time, it accidentally gave it LTE for a moment. That explains everything except the actions of the ATT store employees I specifically asked to do this when they gave me a new SIM. They just cost me two dozen hours of wondering, but hey, at least I know more about my phone now.
If anyone else is hopelessly googling for this issue and finds this thread, call ATT.