yashsingh1/xdaforums huggingface dataset:
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] DLogan24:
Oh okay, yeah I did read a few people saying that if it displays 4G, depending on ROM, it means it really is LTE. The fact that it was switching to 3G at times, i thought was weird. For example, right now it shows 3G. I went into Settings/Status..and under Network Type it shows "UMTS:3". What is this mean? Thank you!
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] mrnovanova:
Umts=3g

Hspa= H

Hspda= H+

You have to understand that if for some reason your LTE signal is weak it'll switch to another frequency. When you see 4g check your status and report please. As far as I can see there is nothing wrong with your device.

Sent from my SAMSUNG-SGH-I747 using Xparent Cyan Tapatalk 2
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] derberts:
So you're not seeing LTE on your stock rom anymore?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] DLogan24:
I'll post back within an hour or so when I leave work. When I'm at work, I only see 3G, but the as soon as I step out(Downtown, Toronto) I will get 4G.

Prior to rooting my phone, my LTE was working perfectly fine. I ended up having to go back to stock rom the other day to fix a GPS issue I had, even when I did go back it was working fine. Just when I'm running CM10, I've yet to see LTE. My phone right now randomly goes from 4G/3G/H.

Thank you for your help/replies!!
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] mrnovanova:
He's on CM10.1

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[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] DLogan24:
Yeah, so I checked my status while it shows 4G. It says LTE:3, I guess when it displays 4G, it means its LTE?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] mrnovanova:
Correctamundo! Some American providers don't have LTE. So when in doubt check your status. Since the providers all got together and falsely advertised hspa and Hspda as as 4g it got real messy, but that's another conversation. I hope all your questions have been answered.

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[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] flexfulton:
I hope I've come to the right place to post this question.

I'm currently on the Rogers network in Canada, running the latest CM10.1 nightly with stock kernel and the LJ1 baseband.

My issue is that lately, in the last month or so my phone would rather hang onto 0% 4G signal than switch back to 3G. This results in a big drain on the battery as it's searching for signal. I can get full bars 3G at my work but just a faint 4G signal.

Is there a reason that my phone won't switch to 3G more often when the 4G signal is poor or missing?

I'd rather not turn off the LTE completely. Just hoping someone might have experienced the same thing. I've tried different modems but that doesn't appear to change anything for me.

Thank you for your time.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] mrnovanova:
Same thing here. At home I only get 1 or 2 bars. But running a speed test I still get 10 down 5 up so my guess is that even though the signal is weak it's still faster than a full 3g signal would be and maybe the modem prioritizes the faster signal over the stronger one. Btw I'm only speculating feel free to correct me if I'm wrong.

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[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] derberts:
Have you tried flashing other modems ?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] flexfulton:
As indicated in my original post I've tried other modems.

I've ran through the list of all "M" modems with no difference.

I am bound as well by the garbled call display that occurs on the most recent 4 modems. I can only use the first couple modems that were released to have a normal appearing name on the call display. It doesn't matter though because none of them switch back and forth between 3G and 4G as good as it used too.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] flexfulton:
Here is a screen capture of what I'm looking at. It would rather hang around for quite a while with this type of signal over jumping back to 3G.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] mumbo jumbo:
is it a "must" to delete the other apns once we have set it to the correct one and now have lte in that area?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] mrnovanova:
Some people do suggest it but if it's not causing any problems why bother.

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[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Dragostini:
Hi everyone. I never had any LTE problems and tonight ive flashed Hyperdrive ROM rls13 or whatever. The newest. Im on Rogers so I set it up for att. I can connect dats as h+ but no LTE. My apn is set up correctly and is the only apn. I try changing it to LTE only and also lte/wcdma and it sticks as wcdma only. I went into the*#*#4636#*#* menu and tried to change it but same thing. It refuses to go LTE. If I set everything to go LTE only and dont return to the menu I get no data at all. So I return to the menus to check if it swapped back and it does...I cant get them to stick and get my LTE. I dont want to change roms...it worked fine with task650 rom so I know im in lte coverage. Rogers s3 i747.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] mrnovanova:
Yeah that happens when going back to a tw rom from an aokp. What you have to do is backup your current rom, restore a backup of your stock rom once you're in there go to more settings you should find the option for lte in there choose it wait for it to connect and once you're connected just restore you're rom and you should have lte.

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[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Dragostini:
My only issue there is I dont have any backups of stock...so if I just odin back to stock [I have everything on my laptop already for returning to stock everything but remaining root] and then reinstall cwm and reflash my Hyperdrive all should be well?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] mrnovanova:
No need to flash just do a nandroid backup with cwm or twrp and restore it. Unless you absolutely want to reflash .

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[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] xXFl4sh:
Hi, just flashed the Liquid smooth rom on my S3(rogers). The problem is whenever I change the network type to LTE/GSM/CDMA auto (prl), it goes back to WCDMA preferred. I have the proper Rogers APN and every thing but no LTE. I only get H+ and 3G.

P.S I am in LTE MAX area.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] DirtyOldMan:
This your first AOSP ROM or the first one with this issue?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] xXFl4sh:
Yes. It is the first ROM I flashed.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] mrnovanova:
See post #263

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[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] xXFl4sh:
I have the same problem. Message or quote me if you find a way to get LTE.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] mrnovanova:
Before quoting him and saying you have the same problem did you actually try the solution I gave him. He doesn't have that problem anymore.

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[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] xXFl4sh:
No. Even if I did the solution you gave him it wont still work. Don't want to go stock rom and then flash again to my current rom.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] mrnovanova:
What makes you say it won't work? I too was skeptical at first but it does work. It happens to me every time I flash an aosp ROM ant then come back to a tw. You don't have to reflash simply do a backup restore stock choose lte in more setting and when it sticks restore. Everyone should have a backup of stock. Anyway that is the simplest way I know how. You see how Dragostini thanked me it's because it worked.You don't want to take the 10 minutes to do it it's up to you. Good luck.

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[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Dragostini:
Flash a Stock rom if you have a backup of it, or flash, doesn't matter, Rooted or not it doesn't matter. Connect to LTE, and then Do a clean install of the ROM you want to actually use.

The issue was caused by going from an AOKP ROM to a TouchWiz ROM. Go from Stock to TW and it will fix it.

Mrnovanova's advice worked gloriously for me. I ended up changing roms for other reasons, but it fixed my LTE issue gloriously.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] bitbang3r:
For what it's worth (and the benefit of others concerned about losing LTE after flashing to an AOSP ROM), I'm probably going to jinx myself by saying this, but I flashed to CM10.1RC5 yesterday, and I seem to still have working LTE.

The phone, a red AT&T i747, was factory-reset, freshly-rooted via Adam Outler's method, had CWM downloaded directly from the author's site.

At first, I flashed to update-XenonHD-06-02-13-signed-d2att.zip. I messed around with it for about 20 minutes, just wasn't feeling it, and proceeded to install CM10.1RC5.

At first, I had data... but very, very dysfunctional data, just like I did with Xenon. The indicator said "LTE", but my data speeds were more like GPRS. Eventually, I stumbled onto the Settings->Wireless/Data[more]->Mobile Networks, and was presented with 3 entries for "AT&T" and 2 for some unrecognizable 5-digit number. I hit the first AT&T entry, the phone hung for about 3-5 minutes, then gave an error. I crossed my fingers, hit "automatically select", and the phone hung for about 5-10 minutes. Eventually, the dialog silently closed, and data magically started working.

I still haven't seen speeds > 12mbps, but that could just as easily be due to network congestion.

I haven't seen the indicator say "LTE" since re-choosing the network, but I *have* seen it indicate both "4G" and "HSPA+" at various times, so I guess it IS actually doing both.

I have never, at any point in my phone's history, attempted to disable LTE, or had it in any mode besides the LTE/WCDMA/GSM default (I'm too much of a speed freak), and my phone was activated for the first time in an area with working LTE.

This might be an important clue why my LTE still works... I won't name names, but I did some cross-checking, and found a couple of users who are having problems with LTE *now* who were posting in threads about disabling LTE a couple of months ago. My guess is that for some unknown reason, disabling LTE via the semi-secret service code might have set up a condition that now gets triggered by AOSP, but doesn't affect users with "virgin" radio configs.

It's also possible that the LTE problems some have reported MIGHT be an artifact of some bug in 10.1/AOSP4.2 that was vanquished long ago, but set up some persistent corruption in the radio modem that continues to cause problems for some users long after the bug that set up the condition was itself fixed.

Evidence that one or both of the previous two paragraphs might be right: the observation that reflashing to stock, then force-reflashing the radio modem and doing a full factory reset, might fix the problem.

Either way, as long as I don't come back and edit this post, anybody who's worried about losing LTE if they flash to CM10.1RC5 (or probably newer) can feel good knowing that there's at least one user who's using it and doesn't seem to have LTE-related problems on AT&T. I think it's important for me to post this, because I almost didn't install it just because I'd seen hundreds of posts about problems, and nearly complete silence about success.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Nic2112:
Thanks for the great information. I was wondering why I didn't have 4G and thanks to your guide, I figured out I had the wrong accesspoint picked.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] spotdog14:
I am running CM10.1 and have LTE enabled on my phone and my indicator indicates 4G and I am seeing speeds of 28,474 kbps down and 9,454 kbps up.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] mrnovanova:
Totally normal aosp roms don't have LTE icons so 4G stands for both lte and HSPA+

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[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Boxy52:
I have this exact same problem on my Fido S3 running task650's AOKP ROM. Anyone know what's up?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] flexfulton:
No resolution yet. There is an open JIRA report found here. https://jira.cyanogenmod.org/browse/CYAN-1209

I'm guessing the issue is that we are running 4.2.2 roms without 4.2 modems. We may see this issue until our phones get the official update to 4.2. That's just my theory and some agree with it but you never know.

For now there is nothing we can do. I've just been manually toggling off 4G at work and at home where I get the worst signals. I'd like to user Tasker to toggle it for me but at the moment there is no way that Tasker will toggle 4G for us. (Secure settings has an option but it's not functional with CM10.1 for some reason)

Cheers.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] xXFl4sh:
Ok, So I went back to TW changed the network type and it still showed 4g not LTE (on Stock). I flashed my new rom and still get 3G and HSPA+
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] mrnovanova:
Showed where? In the status bar? You have to wait for it to take bro. Sometimes it takes up to 10 minutes. You don't just flash change and restore before you actually see the lte status. Wait until you do see the lte icon on stock and then and only then restore of flash your rom.

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---------- Post added at 06:08 PM ---------- Previous post was at 06:05 PM ----------

I'm quoting myself so you see what I said the first time.

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[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] xXFl4sh:
Ok, so I get 4G but only get 2 bars. If I switch it to WCDMA I get 4 bars.

BTW, I did this without going to stock rom.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] mrnovanova:
Depending on your rom and modem. 4G could mean HSPA+. Is there a question in there? I don't really see the point of your reply.

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[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] xXFl4sh:
The question is why do I get 2 bars if I connect to 4G but 4 bars with I connect to HSPA+
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] mrnovanova:
Cool. Well first of all I thought you were trying to get lte working. Are you sure 4g stands for lte? What rom are you using. The simple answer to your question is coverage. If in fact 4G is lte you might be far from a tower which is why you only get two bars. I only get two bars of lte @ home too. But two bars of lte smokes four bars of hspa+ so i wouldn't worry.

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[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] xXFl4sh:
Yea, I am on a AOSP rom so 4G is LTE. I don't really mind if I get 2 bars. The thing I hate is I have to mess around with the settings to get 4G to work, but thanks.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] mrnovanova:
I totally get it now why tou didn't want to flash stock. My mistake buddy. :p That's only when you go from an aosp to a tw rom.

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[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SkyboneNoya:
For Fido gs3 in Ottawa I have the following apn setup to make lte work after losing it on a custom rom.

http://xdaforums.com/showthread.php?t=2328592
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] pankajs37:
lte not working

so I'm on the synergy rom. which is great except for my LTE wont work. I've tried the *#*#4636#*#* and changing apn, and changing network mode. the problem seems to be that network mode is permanently stuck on WCDMA preferred. when i select the menu, no option is selected and when i do select an option, it still says WCDMA preferred. Pulling battery doesn't work either. Everything else does work perfectly tho, but I need LTE
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] mrnovanova:
What rom were you on before?

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[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] pankajs37:
came from cm10.1 snapshot M2
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] mrnovanova:
Try the trick on post. #263. Let me know if you have any questions.

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[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] pankajs37:
Thanks a lot. that did it.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] pankajs37:
I was testing out the battery life on this rom. and it was amazing but i was out when it got to around 10 percent so i tried turning off lte. but it wouldnt let me, the same way it wouldnt let me as it was when it said WCDMA preferred. I tried the *#*#4636#*#* method and got it on gsm. but today when i want to turn back lte nothing works. im guessing i have to go back to stock and then restore again? or is there another way
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] sininenkuu:
Thanks!

I am finally able to get non-lte data on my phone with this very simple fix.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] mrnovanova:
Of course just change your apn to the gsm one and voila!

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[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] pankajs37:
you are a smart smart man
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SkyboneNoya:
..Fido canada

LTE

, mms, and tether apn fix here.

I had posted it before without mms working in another thread. This is how I fixed my lte when I lost it flashing PA from stock.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] mrnovanova:
This has to be one of the most unclear posts ever. Is it directed at anyone in particular. Is there anything we can help you with?

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[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Jubei527:
No LTE after Silm Rom

I was running Task650 switched to Slim Rom and went back to Task650. i got lte but every time i make a phone call it went back to 3g and h+. so i decided to go back to stock Rom got LTE make a phone call it went right back to 3g and H+ again. is this normal or i should start fresh again? i tried the app in original post it dosent let me changed to anything accept LTE/GSM. and I tried what mrnovanova suggested in posted #263 the issue still exist.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] mrnovanova:
The lte standard the we use is for data only not calling so it's totally normal for your lte connection to drop while you are making a phone call.

Carried by a Raven
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Jubei527:
Great, thank!
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] baib88:
Q- Set Correct Roger APNs on AOKP

I am with Rogers, just flashed latest AOKP 4.2.2 Jul.20, and Ktoonsez Kernel.

Under Settings - More - Mobile network settings- Network Mode, i see "LTE/GSM/WCDMA" already selected. However, there are four choices under APNs: Rogers (rogers-core-appl1.apn), Rogers LTE(itemobile.apn), Rogers Tethering (isp.apn), Rogers WAP (internet.com)

I follow OP's instruction, I click Rogers LTE(itemobile.apn), everything looks alright, and I only need to change APN type to "internet + mms". afterward, signal refresh itself, then it show H+. However after a few second, the ratio button automatically goes back to Rogers (rogers-core-appl1.apn), signal switched to 3g.I tried several time, it always automatically goes back to Rogers (rogers-core-appl1.apn),

I tried WIFI Tethering, it works, but speed is quite slow, I think it's in 3g. When I check the APNs setting, Rogers Tethering (isp.apn) is selected. Then, the same problem happen after I turn off the tethering. radio button keep going back to Rogers Tethering (isp.apn) no matter how many time I choose Rogers LTE(itemobile.apn),

Is this normal? should I delete other APNs, just keep Rogers LTE(itemobile.apn)? or should I modify all four APNs to exactly listed on OP?

Under Status - Mobile network type, it shows UMTS:3, not LTE, my Baseband Version is I747MVLDLK4

Also, my signal strength dropped quite a bit after falsh. should I flash a modem? Can any Rogers user suggest one? I am in Southern Ontario

many thanks,
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] baib88:
anyone?? please advise
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dbornack:
I'm also having issues getting LTE on an AOSP ROM. Mostly E and G.

APNs and IMEI are good. Anyone get this fixed?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] rasa92re:
What region are you in? My gf's S3 is giving her the same problems. She's also on an AOSP ROM. We're in lower NY.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dbornack:
Upper East Side. It'll get LTE sometimes after a reboot.. but doesn't stay on it for long.

Have you gone through the same steps without any luck?

I'm not entirely sure flashing back to complete stock will fix the issue either. I have a feeling the root/flashing process hosed up something I can't fix.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] rasa92re:
I'm in NYC, too. LTE only stays on for a bit after reboot so I went back to stock last night. LTE stayed on longer so I figured the custom flashing may have actually corrupted the EFS. When I see her today, if the LTE isn't active, then I'm a afraid you're right and a trip to AT&T is in order.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dbornack:
Please let me know the status when you find out.

I wish there was an easy "template" for re-flashing ESN/NV/IMEI, where you could just plug in your info, and restore everything.

Given the popularity of this device, I can't believe there isn't a simple fix for this. So frustrating.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] rasa92re:
Unfortunately, Edge is the only mobile connectivity she us transmitting. I've searched for a fix like the one you have suggested, and it's come to no avail.

I've read that an stock OTA update might do the trick, despite it being a hassle. I tried the latest firmware, ending in G2, and 4G stuck for at least 10 minutes. I'm still trying testing.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dbornack:
I rolled back to full stock without root and all is normal now. Guess this phone just isn't meant for AOSP.

I run a d2vzw and haven't had a single issue like this.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] rasa92re:
Fortunately, stock has yielded full mobile connectivity. I guess TW Roms are the way to go for d2att, unfortunately.

I wonder why d2att has AOSP issues, though? I'm no programmer so I wouldn't know where to start, but as a serious enthusiast, I have not seen a device respond this badly to AOSP.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] monkeysez:
I regret buying the d2att for usage on T-Mobile . my next device will be a nexus device
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dbornack:
I have no idea. I run d2vzw and have been on AOSP since Slimbean 4.1. Yes, I had a few issues with IMEI when I started, but I got that all sorted out in a matter of minutes.

No idea why AOSP is bad for d2att. Hopefully I can get my buddy on a TW ROM to help him with bloat, etc.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] rasa92re:
My GF is used to AOSP at this point so I had to find a TW ROM that is themed to look like AOSP or even CM. Therefore, I flashed Dandroid for her. LTE is on and stable, and she's familiar with the layout. (http://xdaforums.com/showthread.php?t=2121506)
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] judas17:
Like a charm

thx!
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] detdett:
bump.