[Q] I lost LTE on AT&T - ONE Q&A, Help & Troubleshooting

I was on a trip recently and I turned off LTE through quick tile because the place I was staying at did not have LTE. Now, I seem to be stuck on HSPA.
I reset network settings and even did a complete wipe of everything and I am still stuck on 3G. I have Preferred network type set to LTE (recommended). I am using the ATT LTE access point (screenshot attached).
Any ideas? Any way to check if it's hardware of software? I am running 44S.
I used to have LTE here and my gf's iPhone 6 has LTE in the same location.

tehcypress said:
I was on a trip recently and I turned off LTE through quick tile because the place I was staying at did not have LTE. Now, I seem to be stuck on HSPA.
I reset network settings and even did a complete wipe of everything and I am still stuck on 3G. I have Preferred network type set to LTE (recommended). I am using the ATT LTE access point (screenshot attached).
Any ideas? Any way to check if it's hardware of software? I am running 44S.
I used to have LTE here and my gf's iPhone 6 has LTE in the same location.
Click to expand...
Click to collapse
I'd think the only reason it'd be hardware is if something went belly up. Seems doubtful to me as bard hardware is fairly rare. More likely software. A few times I've lost LTE after changing out my sim card, and only the phone company doing some type of reset has 'fixed' it. Not often, but enough to be a PITA.

tehcypress said:
I was on a trip recently and I turned off LTE through quick tile because the place I was staying at did not have LTE. Now, I seem to be stuck on HSPA.
I reset network settings and even did a complete wipe of everything and I am still stuck on 3G. I have Preferred network type set to LTE (recommended). I am using the ATT LTE access point (screenshot attached).
Any ideas? Any way to check if it's hardware of software? I am running 44S.
I used to have LTE here and my gf's iPhone 6 has LTE in the same location.
Click to expand...
Click to collapse
Add "hipri" under APN Type, save, reboot & see if that helps. :fingers-crossed:

Put your sim in your gf iPhone and let it get an Att signal then put the sim back in the opo that's what I did with my phone and it worked
Sent from my A0001 using XDA Free mobile app

nasseem said:
Put your sim in your gf iPhone and let it get an Att signal then put the sim back in the opo that's what I did with my phone and it worked
Sent from my A0001 using XDA Free mobile app
Click to expand...
Click to collapse
I tried that. I also put my sim in other OPO and it got LTE. I get LTE with my sim card on OPO thats usually on t-mobile (but his sim did not get LTE on my phone). I also tried my SIM in a nexus 5 and that got LTE as well.
Im fairly sure its hardware failure

tehcypress said:
I tried that. I also put my sim in other OPO and it got LTE. I get LTE with my sim card on OPO thats usually on t-mobile (but his sim did not get LTE on my phone). I also tried my SIM in a nexus 5 and that got LTE as well.
Im fairly sure its hardware failure
Click to expand...
Click to collapse
if t mobile lte works on your opo and not at&t, im sure it's at&t issue.. Do you have a global/international opo unit?

apartmentpasig said:
if t mobile lte works on your opo and not at&t, im sure it's at&t issue.. Do you have a global/international opo unit?
Click to expand...
Click to collapse
I was not able to get LTE with the T-Mobile sim. However the other opo got LTE with my ATT sim.
I have the Global version

Related

Fix for T-Mobile LTE?

Is there a workaround or any suggestions to get everything functional such as calls etc.
As of now only data works but you can't receive or send out messages,make calls etc.
When connected to H+ everything works flawlessly and the carrier shows, when connected to LTE only data works nothing else and the phone can't identify what carrier is being used.
Sent from my HTC6525LVW using Tapatalk
UPDATE:
The issue seems to be that Verizon by default is locking the GSM radio. Users are reporting the same in the Moto X and Droid Ultra forum. Users using 4.4.2 on T-Mobile with a Verizon device.
charlieb620 said:
Is there a workaround or any suggestions to get everything functional such as calls etc.
As of now only data works but you can't receive or send out messages,make calls etc.
When connected to H+ everything works flawlessly and the carrier shows, when connected to LTE only data works nothing else and the phone can't identify what carrier is being used.
Sent from my HTC6525LVW using Tapatalk
UPDATE:
The issue seems to be that Verizon by default is locking the GSM radio. Users are reporting the same in the Moto X and Droid Ultra forum. Users using 4.4.2 on T-Mobile with a Verizon device.
Click to expand...
Click to collapse
I thought verizon was forced to sim unlock all their lte devices?
123421342 said:
I thought verizon was forced to sim unlock all their lte devices?
Click to expand...
Click to collapse
They are SIM unlocked as I'm using one but it seems the band we need for LTE isn't playing well.
Sent from my HTC6525LVW using Tapatalk
Was curious if anyone else was having this issue. Any thoughts that it might be related to skipping Verizon activation? When I got the phone, wasn't activated and on first turn on it prompted activating Verizon Sim but I exited out and just popped in T-Mobile Sim.
charlieb620 said:
Is there a workaround or any suggestions to get everything functional such as calls etc.
As of now only data works but you can't receive or send out messages,make calls etc.
When connected to H+ everything works flawlessly and the carrier shows, when connected to LTE only data works nothing else and the phone can't identify what carrier is being used.
Sent from my HTC6525LVW using Tapatalk
UPDATE:
The issue seems to be that Verizon by default is locking the GSM radio. Users are reporting the same in the Moto X and Droid Ultra forum. Users using 4.4.2 on T-Mobile with a Verizon device.
Click to expand...
Click to collapse
levilib said:
AFAIK, LTE (unless the carrier is using voLTE) is a data only network. Verizon uses LTE for data and CDMA for calls and text.
Verizon seems to only allow GSM/UMTS or CDMA/LTE on the M8 at one time, there doesn't seem to be a true Global mode that allows GSM/UMTS and LTE to run at the same time.
That would explain why people are reporting either LTE or calls/texting (which, as above mentioned, only works on 2G/3G (be that CDMA or GSM))
The question is, is there a way to get around this? On the S3/S4 there was an app called phoneinfo which showed more modes than the Mobile Network settings menu. Is there such a thing for the M8?
This is quite disappointing news for me, since this is the first Verizon phone I'm aware of that has the 1800MHz LTE band, and that's the band used in Australia where I'm headed soon. I was excited about being able to finally use LTE there! I guess I'll have a choice between LTE and calls/text like all those in this thread using T-Mobile.
Click to expand...
Click to collapse
Thought I'd copy this here
http://www.htc.com/us/support/htc-one-verizon-wireless/howto/394092.html
Hoping the best that this would be the fix for the GSM
while you edit the data as well I believe
Will never get 4G LTE on any other carrier besides Verizon in the US. Never have. Never will. Those radio bands are blocked at chip level.
prdog1 said:
Will never get 4G LTE on any other carrier besides Verizon in the US. Never have. Never will. Those radio bands are blocked at chip level.
Click to expand...
Click to collapse
They got the M8 Lte work with T-Mobile but Calls and messages are not working while you have LTE
youtube.com/watch?v=oJwqFersSoo
must.sayim said:
They got the M8 Lte work with T-Mobile but Calls and messages are not working while you have LTE
youtube.com/watch?v=oJwqFersSoo
Click to expand...
Click to collapse
More than likely it is same as Verizon. Won't happen till they have voice and data both over AWS network. Currently on Verizon data is on LTE and voice is on CDMA. If can get into signal settings may be a way to lock the voice section in. It is not on LTE. Verizon has had the two linked since TBolt. Others have had a problem doing this. Has to be able to do dual band at same time. Also shouldn't get LTE at all if not in T-Mobile AWS area.
Unless T-Mobile rolls out voLTE and the M8 is compatible, the VZW M8 won't work for both call/sms and LTE data simultaneously. The other solution would be figuring out a new mode that allows LTE and GSM/UMTS to work together, maybe a software update will do that, but something tells me VZW isn't running to make our lives easier in this regard (Unless they start offering international 4G LTE roaming, then they'll have to fix this issue - and that might be on the horizon as this is the first VZW phone to have LTE bands that VZW doesn't use nor has any plans to use, such band 3 1800MHz)
Phone info
Sent from my HTC6525LVW using Tapatalk
Apparently phone info isn't helping...
Sent from my HTC6525LVW using Tapatalk

[Q] LTE not working after radio update D821

About a month ago I was in an LTE area and browsing xda and noticed a radio update so wanting the latest version I immediately flashed it. I noticed on rebooting that my lte wasn't working and I thought that the settings had just been corrupted but after a full re flash of the system and the modem I still can't get LTE in an area where other 4G phones can. However my HSPA+ works fine pulling 20mbps next to a cell tower.
Wondering if anyone can help?
Network details:
Three UK Lte bands 3/20
Phone
Nexus 5 D821UK
Why don't you flash the old radio on which LTE worked fine?
vin4yak said:
Why don't you flash the old radio on which LTE worked fine?
Click to expand...
Click to collapse
I did, still no change. I thought that would be the solution too. I might be onto something but not sure? On the APN settings does having the bearer set to LTE make a difference, I never noticed before but noticed that it wasn't set now.

Using PR 5.1.1 on Tmobile --- What are the best settings?

Hi Everyone,
I picked up the phone during the EBAY $249.00 sale and really like the phone, however I hated the ATT Bloatware.. I flashed the PR 5.1.1 firmware and really like how clean it is, however I am not getting good speeds on Tmobile. In the mobile network settings there is no option for LTE. I have gone into the service menu and changed the band to 4 and can get LTE, however it is really slow, I have also chosen band 17 and getting OK speeds using HSPA+, however no LTE and when I reboot the phone it resets the bands to the default settings...
Any one have any ideas or suggestions?
Thanks,
Chris
I am also having the same problems. I actually have a working AT&T SIM, and I can verify the LG phone can pick up LTE 100% , but with a T-Mobile SIM I can only get HSPA+ (using LTE discovery). I am testing this literally in front of the T-Mobile headquarters in the Seattle area, so I think this is unlikely to be some sort of cell tower issue. My iPhone is using LTE in the same location without any issues. When I use 277634#*# and select band 17 and GSM/WCDMA/LTE Auto , it seems to trigger LTE once a a while, but it never holds for too long.
By the way, I am intrigued that someone in Youtube says it is possible to enable band 12 for this H950 model (just search "band 12 LG Flex 2 T-mobile" in Youtube). Maybe this is fake info?!?
Walkamo said:
Hi Everyone,
I picked up the phone during the EBAY $249.00 sale and really like the phone, however I hated the ATT Bloatware.. I flashed the PR 5.1.1 firmware and really like how clean it is, however I am not getting good speeds on Tmobile. In the mobile network settings there is no option for LTE. I have gone into the service menu and changed the band to 4 and can get LTE, however it is really slow, I have also chosen band 17 and getting OK speeds using HSPA+, however no LTE and when I reboot the phone it resets the bands to the default settings...
Any one have any ideas or suggestions?
Thanks,
Chris
Click to expand...
Click to collapse

dual sim issue... Verizon/tmobile

I've had duel sims running with no issue since I bought the phone. Now today all of a sudden the Verizon sim will not work in this phone. I've tryed switching positions.... And by itself... NOTHING... I put the Verizon sim in a Verizon phone and works fine...
Any settings or somthing I can check? This phone is begining to be more trouble than it's worth.
Are you sure a Verizon sim will work with this phone? Usually Verizon runs on the CDMA network. If the phone is GSM only, the Verizon sim reverts to voice over LTE. As far as i know, this phone does not support voice over LTE.
I'm just guessing.
An educated guess though
But check the data network settings.
Play with the dual sim settings.
Sometimes one of my sim slots just disconnects for no reason
stealthj said:
Are you sure a Verizon sim will work with this phone? Usually Verizon runs on the CDMA network. If the phone is GSM only, the Verizon sim reverts to voice over LTE. As far as i know, this phone does not support voice over LTE.
I'm just guessing.
An educated guess though
But check the data network settings.
Play with the dual sim settings.
Sometimes one of my sim slots just disconnects for no reason
Click to expand...
Click to collapse
Definitely works..... I've since got it working once again but no idea how. See screen shot
DrmMaster said:
Definitely works..... I've since got it working once again but no idea how. See screen shot
Click to expand...
Click to collapse
It seems like the vivo nex snapdragon 845 version (the pop-up camera one) is missing a band 13 for 4G lte. Does that impact the connectivity in any way on Verizon?
Also is your model the chinese rom or the global rom?

XZ Premium / LTE on AT&T? AT&T says I'm only using 3G

I'm being told that my device is going to be booted off AT&T because my XZP is only running at 3G (according to at&t support engineers). I find this hard to believe.
I had some initial issues with the sim because I used the sim from an older phone, which could only do 3G, so it wasn't registered on their network as capable of anything else. The jerks in the store were of no help, and even got attitude with me about dropping my sim into a new phone to see if it would register. Luckily, I had a bud who had a brand new LTE AT&T phone, so I popped my sim in there, let it register, get access to all their new/current bands, and then I put the sim back in my XZP... lo and behold, all the capabilities were unlocked.
I have been running the at&t apn for high speed, phone started using 4g+ when the LTE rollout finally got fully deployed.
In trying to run down if AT&T is full of crap or not about kicking my phone off the network that is "only using 3G"... I came across this https://apn.gishan.net/en/apn/att/sony-xperia-xz-premium
It shows I should have a bearer of LTE, and I do not. I have 4G and all of the older network types, but no LTE. Does anyone else have this? If so, what network are you on? My phone should be current on its updates, as old as they are...
Maybe I need to drop this sim into a current gen phone again and let it register on their network?
Any ideas/feedback is appreciated.

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