yashsingh1/xdaforums huggingface dataset:
[Nexus 4 General] wease59:
Its a Pantek Burst and it did show 4g when connected.
[Nexus 4 General] Dav3rd:
I'm having the same issue as well and it is rather annoying getting 3g speeds each and every time I change the hybrid modems. This is with installing the hybrid modems in the recovery, and then Enabling LTE in the app and rebooting once again.

I have done the same thing and I'm using the stock 4.4.2 rom as well
[Nexus 4 General] T41NT:
I'm on the Beanstalk rom 4.4.2, but it doesn't stick after reboots. Gotta do the 4636 thing every time. Did before I just did a clean flash to reset my phone. (I do this every couple months)
[Nexus 4 General] gorilla p:
So when trying to install calkulins nexus 4 ROM 1.5, I got a "status 7" error when flashing it. I can install other rims fine, so I figured it was just the ROM... But now this 33/98 package is giving me the same error. Any ideas? It worked perfectly fine before that.
[Nexus 4 General] Bill Gamble:
http://highonandroid.com/android-ro...-error-with-cwm-recovery-on-rooted-android/
[Nexus 4 General] dEX2340:
Flashed the zip, think I still need to contact provider to make it work. However, do you guys have the option 4G in preferred network type (Settings - more - mobile networks)?

And if you use *#*#4636#*#* do you also still see 'WCDMA preferred'?
[Nexus 4 General] Berrydroidcafe:
You should change it to LTE/GSM AUTO

The service provider really shouldn't have anything to do with it.

The 4G option is only there when you switch to LTE/GSM auto.

Sent with my Nexus® 10 minus 3
[Nexus 4 General] dEX2340:
Thanks, indeed, when changing to LTE/GSM AUTO (PRL) preferred network type mentions '4G (recommended)'. But I can't thick that option if I click on preferred network type (only 2G/3G). Normal?

Anyway, that seems OK. But LTE/GSM AUTO doesn't stick. It goes back to 'WCDMA preferred' afterwards ...

EDIT: OK now selection sticks.

Also, icon in notification bar still shows H+, does that mean no 4G available?
[Nexus 4 General] Berrydroidcafe:
The only way to find out for sure is to go where there is a known LTE tower/service, but if 4G isn't shown, most times LTE isn't available. (if everything is working right)

Try this rom:

http://xdaforums.com/showthread.php?t=2545838

Sent with my Nexus® 10 minus 3
[Nexus 4 General] dEX2340:
I like the ROM I use now (http://xdaforums.com/nexus-4/development/-t2524014) but the one you suggest seems very interesting. Thanks again!
[Nexus 4 General] Berrydroidcafe:
The main reason I suggested that one because of the LTE integration and it's really a good rom.

Sent with my Nexus® 10 minus 3
[Nexus 4 General] dEX2340:
If I read that thread correctly, with this ROM you have the option to thick '4G'. Do you mind to post a print screen? :)
[Nexus 4 General] Berrydroidcafe:
Sent from my Nexus 4
[Nexus 4 General] dEX2340:
Ah, the joy of forums! Many thanks for all your prompt replies, much appreciated!
[Nexus 4 General] dEX2340:
Flashed the ROM. 4G seems OK (need a proper test) but ROM is very basic. I've gotten so used to all these additional settings ... (Tile toggles, advanced boot menu, ..).
[Nexus 4 General] Berrydroidcafe:
[MENTION=4209311]dEX2340[/MENTION] it does have advanced boot menu. As far as the toggles, I don't know because for one, I'm not certain what you mean by it, two haven't played with it. :)

Sent with my Nexus® 10 minus 3
[Nexus 4 General] dEX2340:
Can you tell me where I can find adv boot menu?

The settings menu is so limited, with CM like ROMs you change the tiles, battery icon, etc. WiFi and mobile internet icons are static, ...

Anyway, wrong thread :)
[Nexus 4 General] Berrydroidcafe:
[MENTION=4209311]dEX2340[/MENTION] it's in Developer Options.

Sent with my Nexus® 10 minus 3

---------- Post added at 02:29 AM ---------- Previous post was at 02:28 AM ----------

For some reason(s) I can't quote messages.

Sent with my Nexus® 10 minus 3
[Nexus 4 General] dEX2340:
Indeed, that's where it should be. But on my phone it's really not there. Strange ...
[Nexus 4 General] Berrydroidcafe:
Did you go to about phone and hit the "Build Number" about 6-7 times to unmask the developer option?

Sent with my Nexus® 10 minus 3
[Nexus 4 General] davidfig:
Nexus 4 LTE enabled

So I got root access by unlocking bootloader, added TRWM recovery and used supersu. Then set NEXUS 4 LTE enable and choose a hybrid modem (33/98) then reboot. The recovery flashed the modem, the phone rebooted again and done.

In my area I went from 2.1mbs to 14.65mbs in speedtest.net. I think it will do better in stronger cell areas. No need to upgrade to Nexus 5 now. Happy Camper.
[Nexus 4 General] dEX2340:
Yes, I've done this a 100 times :)
[Nexus 4 General] yochananmarqos:
Depends on the ROM what's in Developer Options.
[Nexus 4 General] Berrydroidcafe:
And the developer option didn't show up?

I was going by the thinking he was running the Nexus 5 port. I do believe all is CM11 based roms has it in the same place.

Sent with my Nexus® 10 minus 3
[Nexus 4 General] Noob911:
The nexus 5 rules lol
[Nexus 4 General] dEX2340:
Developer options do show up, but not adv boot. I was using Nexus 5 ROM, LTE seemed to work. Now back to other ROM as it has much more tweaks.
[Nexus 4 General] Berrydroidcafe:
It's there, but I guess it's a moot point now.

Sent from my Nexus 4
[Nexus 4 General] JayXL14:
Hey guys I'm using a Nexus 4 on 4.4.2 with the Purity ROM and was using the 33_98 radio after having some problems with the 33_84 one.. Does it matter which one I use? Is the 84 one better?

The reason I ask is that the 33_98 one was working for about 5 days.. now I drop a signal (WiFi is fine) every 30 seconds or so, and then the LTE comes back. Using franco kernel or hellscore and it does the same thing if that matters.
[Nexus 4 General] Berrydroidcafe:
98 radio is for Kit Kat, 84 is for Jellybean. You can try the 27_98 hybrid.

Sent with my Nexus® 10 minus 3
[Nexus 4 General] davidfig:
make the jump to light speed.

Below is what I wrote a few days back. Today I got a chance to try the speed at a stronger cell signal location. I was blown away. I got 31.4mbs download.

Holly Cow Batman!
[Nexus 4 General] Saml01:
Is it just me or after flashing 33/98 hybrid on Kit Kit it doesnt allow switching to 4g/3g through the quick settings panel that it does on ICS?
[Nexus 4 General] pappyN4:
nice :)

just switched providers to one that has LTE so looking forward to giving this a try
[Nexus 4 General] Berrydroidcafe:
Don't know what country you're in, but you might want to check to see if the LTE that the nexus 4 support is being utilized by the carrier you're going to. :)

Sent with my Nexus® 10 minus 3
[Nexus 4 General] CoNviCTZz:
Keeps aborting.

I'm on 4.4.2 using the CM11 Rom snapshot 3 and when i install the zip it abort and says something about you dont need to isnatll it after every update and pac for example will not need this zip flashed on each update to enable lte.
[Nexus 4 General] Pteer Griffin:
Does this fix an issue with no sound from the earpiece and disabled mic? I'm from Canada and I bought a Roam Mobility sim which runs on T-Mo's network. I brought it on a trip to the US and calls wouldn't work (only text and data). I finally remembered that I upgraded to a custom Jellybean rom and I hadn't updated the 33 radio from stock 4.2.1. Or do you have to manually edit the sound file to make it work on T-Mo?
[Nexus 4 General] GoBigRed:
Thanks for these. Super easy, loving LTE on my Nexus 4 with Purity ROM.

For some reason, my Bluetooth will disconnect frequently on the .33/98 Radio but not on the .27/98 Radio. Anyone else have this issue?
[Nexus 4 General] c00ller:
anyone on the latest CM nightly 20140325? It supposedly added the LTE toggle that's been missing in CM 11. http://review.cyanogenmod.org/#/c/58164/

However, nothing seems to have changed on my mako and the All in one LTE enabler installed. I get LTE like I always have, but I can't find a toggle for it anywhere.
[Nexus 4 General] pmorrsn:
Just set up on my phone, with .33 version. Seems to work, though don't know how I will really know the difference.

I have CM11 M5.

I had to use the dialer manual method and then finding where to enable, was under phone info? But then I enabled fast.lte, not the ipv6 option.

Rebooting held settings.
[Nexus 4 General] gorilla p:
Does anyone know what causes the status7 error when flashing this? I've had this issue off and on for some time now. Started up again after flashing latest c-rom 5.8.

I'm using latest CWM.

With 5.6 and 5.7 I was able to flash hellsdoctor/tardis as well as AIO LTE enabler without issue.

After 5.8, I'm getting the status7 failures (set_perm some options failed) when trying to install hellsdoctor/tardis and AIO LTE.

I tried a clean install and am having the same issue. I did notice that if I flashed the tardis mod standalone first, I could then flash the hellsdoctor/tardis combination without issue. AIO LTE still gave status7 however.

I have had this status7 issue before and don't know how I got rid of if. Any Input anyone?
[Nexus 4 General] Bill Gamble:
Use TWRP instead.
[Nexus 4 General] gorilla p:
I flashed latest twrp and I'm not getting the annoying status7 errors anymore.
[Nexus 4 General] zlamma:
band 2

Couldn't find this info in search. But does the hybrid radio support band 2 this is all I get where I'm at.
[Nexus 4 General] BigDig:
No, only band 4
[Nexus 4 General] bpear96:
Recently updated my Nexus 4 Modem flasher app! http://xdaforums.com/showpost.php?p=52166998&postcount=236
[Nexus 4 General] cisf0rcalvin:
Thanks. Super fast and easy.
[Nexus 4 General] masterofmayhem:
Is there any update on the hybrid radio for the 4.4.3 update?
[Nexus 4 General] santeana:
Since it just came out 2 days ago, I doubt it.
[Nexus 4 General] Almayce:
Got a quickie here, how can I tell I'm on LTE? Besides the Internet speed, I can see no icon in status bar, would it be shown there if I was on LTE?
[Nexus 4 General] santeana:
When you are on LTE, it will display 4G up by your signal bars.
[Nexus 4 General] gorilla p:
Hybrid radios are available for 4.4.3. Be sure to visit Morrislee's thread.

http://xdaforums.com/showthread.php?t=2412052
[Nexus 4 General] ma678:
Is it determined by rom? 4.4.2 shows lte indeed.
[Nexus 4 General] NYLimited:
The actual text comes from the framework if I recall correctly. You could change the framework to reflect something else or use something like an xposed module to changes if for you.

---

* All those who believe in psychokinesis raise my hand.
[Nexus 4 General] santeana:
I'm b not normally one to ask for updates but since the last one was out so quickly I'm wondering... Is anyone working on a 1.02/.33 hybrid? Would suck if not, since I just bought the app lol
[Nexus 4 General] sychim:
For now you can use the Beta version from here: http://xdaforums.com/showpost.php?p=53186630&postcount=275
[Nexus 4 General] santeana:
Hey! Thanks very much for that! So far so good :)
[Nexus 4 General] gorilla p:
[emoji343]v^v^v^v^- Begin Transmission -v^v^v^v^

33/1.03 is working well.[emoji106]

[emoji92]Updates on bit.ly/makostuff[emoji92]

1 - Uploaded 27/98, 33/98, 27/102, 33/102, 27/103, 33/103 hybrid modems.

2 - Edited LTE enabler script to enable HD audio in build.prop (Only works for pre-.54 cellular modems (such as .27 and .33).

3 - Uploaded stock 4.4 - 4.4.4 modems (.98, 1.02, 1.03)

v^v^v^v^- End Transmission -v^v^v^v^
[Nexus 4 General] misterno123:
I have been using LTE on my N4 for long time now but the other day I think I pressed a button which I am not suppoed to. And now LTE is not working

no internet when I choose LTE but there is internet on 3g

Can someone help me? or direct me to a website for me to fix this issue?
[Nexus 4 General] triplenine:
Just borrowed an N4 from a friend and did not realize the lack of LTE before I conceded to the 4.4.4 upgrade. Here is where I am at. Rooted 4.4.4 stock install with current clockworkmod recovery. I have tried the play store version of the flasher app and a previously mentioned beta. I think that was for 4.4.3, correct me if I don't understand. No modem combos I have tried have flipped me regardless of the choice made in the test page. Any advice? I am on ATT in Colorado. I assume that I have an LTE sim as the phone that broke was an SGS3. Thanks in advance.
[Nexus 4 General] yochananmarqos:
Have you checked *#*#INFO#*#* to make sure the preferred network type is LTE/GSM auto (PRL)? I've had to switch it myself sometimes after using this app to flash the custom radio & enable the build.prop LTE values. I'm on T-Mobile in Colorado, by the way.
[Nexus 4 General] kenzoxd107:
I will try it now
[Nexus 4 General] triplenine:
Yeah. I have tried all of the LTE entries. I feel like I am missing something. Still looking for help.
[Nexus 4 General] yochananmarqos:
You'll also want to make sure the preferred network type says 4G (recommended) as well as correct APN settings. T-Mobile is fast.t-mobile.com, AT&T I think should be phone.
[Nexus 4 General] kdellea:
Nexus 4 doesn't support LTE on att. Correct me if I'm wrong.
[Nexus 4 General] yochananmarqos:
AT&T provides Band 4 at least in some areas acorrding to Wikipedia.
[Nexus 4 General] kdellea:
Its quite rare
[Nexus 4 General] triplenine:
The preferred network settings does not have 4G as an option. That is the big standout suggesting that I am doing something wrong.
[Nexus 4 General] yochananmarqos:
It will say 4G (recommended), but when you select it it will only give you 3G & 2G as options since 4G isn't built in to the ROM.
[Nexus 4 General] vincentallen2:
I have LTE enabled on my Nexus 4 using a straight talk at&t sim card, and I receive ACTUAL LTE data. I stay in the Orange County area in California.
[Nexus 4 General] gorilla p:
Yeah, this definitely varies from ROM to ROM. Dirty Unicorns and C-Rom have the LTE/4G option.
[Nexus 4 General] kdellea:
Okay I'll have to look at some homes in that area
[Nexus 4 General] xperimentul:
Lol [MENTION=5083198]kdellea[/MENTION]

I'm in the San Fernando Valley on net10(AT&T) and I also get LTE.
[Nexus 4 General] Maibol:
hi guys i got an issue ill never has problems before with this mod and this weekend my lte service stop randomly im using the latest radio my apn is correct and im running the same rom as last week i try to :

full wipe

uninnstall multirom i was using it and the lte was working on all the roms i got installed

change radios

and manually edit the buildprop ( before i use lte enabler apk)

and i mess with straight talk to fine a solution do you think guys i miss something ? maybe the lte chip blows?

im in puerto rico and i have been using this mod for a while like a year enjoying the straight talk att lte service can some one help me :( :'(
[Nexus 4 General] BigDig:
I don't see how the LTE chip will blow... It could be that your provider is working on the towers...
[Nexus 4 General] Maibol:
i thought that and as the costumer service dont know anything about it ill need to wait and suffer untill something comes out of it
[Nexus 4 General] Almayce:
This sucks, no band 4 in germany. I haven't found any in whole europe for that matter(based on the Wikipedia link in OP). Gotta wait for the Nexus 6 then I guess :)
[Nexus 4 General] TPWarrior:
StraightTalk APN?

Hello [MENTION=1884668]vincentallen2[/MENTION]. Great to hear this is working for you. Though I'm in another area, I'm also with StraightTalk AT&T. Would you be so kind as to share your APN settings? I'd appreciate it. Thanks.
[Nexus 4 General] Rody2k6:
Does this package work with 4G in other countries and different frequencies?
[Nexus 4 General] gorilla p:
http://bit.ly/1tlwiW6

Sent from my Nexus 4

---------- Post added at 02:39 PM ---------- Previous post was at 02:37 PM ----------

Mist likely not. This is Band4 only. See below.

https://en.m.wikipedia.org/wiki/List_of_LTE_networks

Sent from my Nexus 4
[Nexus 4 General] TPWarrior:
Dude... seriously?
[Nexus 4 General] edipo2s:
Can this make possible to add Band 7 to Nexus 4?

http://www.xda-developers.com/android/add-frequency-bands-qualcomm/
[Nexus 4 General] yochananmarqos:
No, the hardware only supports Band 4.
[Nexus 4 General] RainGater:
I flashed one of the LTE Hybrid modem using the flasher app. I am not seeing LTE as an option under Cellular Networks - Preferred Network Type (it sure looks like it needs to be built into the ROM).

I tried editing the build.prop with this but it isn't working:

telephony.lteOnGsmDevice=1

ro.telephony.default_network=9

ro.ril.def.preferred.network=9

I know I can go and do this, *#*#4636#*#* and pick LTE/GSM as the Preferred Network type, but how to make it stick on reboots?
[Nexus 4 General] joaonds:
I flashed this 2 zips (28 and 33) and not have option 4G in Settings / More / Network Operators.

My operator is VIVO (Brazil) and have 4G.

Other solutions ?

Tapping #*#*4636 i not have LTE or Network options.

OMNI Rom 4.4.4 here.
[Nexus 4 General] gorilla p:
If you research this, you will find that not all LTE frequencies/bands are the same.

This phone only works with Band 4 LTE.

Vivo in Brazil uses Band 7. This phone will not work with LTE in Brazil.

http://en.m.wikipedia.org/wiki/List_of_LTE_networks

Sent from my Nexus 4
[Nexus 4 General] jetscreamer001:
hybrid modem update

Will there be an update to the .33/.89 radio for Lollipop? I have flashed it on my Nexus 4 running Lollipop, but the setting will not stick when I turn on my phone. It would reset to HSPA. I know this was not the case when I was running KItKat. Thanks.
[Nexus 4 General] TPWarrior:
Wanted to follow up to say that 103/33 is working for me on StraightTalk AT&T in Cincinnati.

The weird thing is that I flashed this over a month ago. But since StraightTalk says they have solid LTE coverage throughout Cinti & suburbs, I assumed I either had an incorrect APN, non-LTE SIM, or some other problem.

But I had to drive downtown today (which is rare) & I noticed the LTE indicator on. A quick check with Speedtest & I pulled in 40 down\10 up. Not bad.:o

Wish StraightTalk's coverage was better but I'm happy to say the flash worked. Just wanted to say thanks.

Sent from my N4 (Frank.r5-flavored Lollipop by [MENTION=1050103]sykopompos[/MENTION])
[Nexus 4 General] gorilla p:
After seeing these past couple posts, I figured I should start posting my updates here...

The 98/33 hybrid is outdated. (From 4.3 I believe?) The 1.03 is for KK. L/5 was released with 1.04 and updated to 1.05 with Android 5.0.1

The latest radio firmware is on 1.05

All hybrid radios are available in flashable zip format in my file repo http://bit.ly/makostuff

I recommend .33/1.05.

27/.105 is available as well.
[Nexus 4 General] AJ06:
Wasn't there a guide in how to make LTE settings stick after reboots?

I remember seeing one around here.
[Nexus 4 General] TPWarrior:
I'll try the newer modems over the next week as I drive about town. Thank you for sharing.:)
[Nexus 4 General] gorilla p:
Yeah, but I haven't had any trouble getting them to stick with the new L/5 Roms.

You can copy and paste the following build.prop entries.

Make sure the title has the # before it like it does here and make sure the entries aren't already listed in your build.prop file.

There are some T-Mobile specific adjustments that can be made as well.

#Enable LTE

telephony.lteOnGsmDevice=1

ro.telephony.default_network=9

ro.ril.def.preferred.network=9

#Enable HD Voice

ro.ril.enable.amr.wideband=1

#Video Playback Tweaks

video.accelerate.hw=1

debug.sf.hw=1

#Google DNS Tweaks

net.dns1=8.8.8.8

net.dns2=8.8.4.4

net.rmnet0.dns1=8.8.8.8

net.rmnet0.dns2=8.8.4.4

#NetSpeed Tweaks

net.tcp.buffersize.default=6144,87380,1048576,6144,87380,524288

net.tcp.buffersize.wifi=524288,1048576,2097152,524288,1048576,2097152

net.tcp.buffersize.umts=6144,87380,1048576,6144,87380,524288

net.tcp.buffersize.gprs=6144,87380,1048576,6144,87380,524288

net.tcp.buffersize.edge=6144,87380,524288,6144,16384,262144

net.tcp.buffersize.hspa=6144,87380,524288,6144,16384,262144

net.tcp.buffersize.lte=524288,1048576,2097152,524288,1048576,2097152

net.tcp.buffersize.hsdpa=6144,87380,1048576,6144,87380,1048576

net.tcp.buffersize.evdo_b=6144,87380,1048576,6144,87380,1048576
[Nexus 4 General] jetscreamer001:
Thanks for the update, I have been using the .33/.104 modem since upgrading to Android 5.0. I have no issue. I used SQ Lite Debugger to change the value from 0 to 9 without having to change my build.prop file.
[Nexus 4 General] gorilla p:
I think there were some additional bug fixes, which is why they went from 104 to 105 so quickly.

The same thing happened with 4.4 - 4.4.4 also.

Sent from my Nexus 4
[Nexus 4 General] AJ06:
I checked and those entries were already in the build.prop file.

Still not sticking, using the dialer code I have to go the the phone testing to enable LTE/GSM.

Hmm. I'm also on rooted stock 5.0.1

EDIT:

Found it: http://xdaforums.com/showpost.php?p=56791857&postcount=1427

Use that if LTE doesn't stick after rebooting. Works for me. You can uninstall the SQ Lite Debugger app after you've made the changes.
[Nexus 4 General] Zaazu:
lte band 3

A quick question. Are you planning to make zip to enable lte band 3?

I'm in Pakistan and the 4G network here is band 3 and i'm using s4 m919 (originally T-mobile version) with sickness v3, kitkat 4.4.4.

So desperate to make this thing work on my cell.
[Nexus 4 General] yochananmarqos:
It's a hardware limitation, only Band 4 works. Period.
[Nexus 4 General] itsneverlupus:
I got a bit of a unique situation. I have to use a LTE signal booster inside my building because coverage is spotty. The specific booster is the Cel-Fi Duo for T-Mobile

http://www.cel-fi.com/cel-fi-duo-for-t-mobile-3g-4g-4g-lte/

While I get full bars of LTE when I am outside, my phone doesn't pick up the amplified signal from my booster when I am inside. Is there a reason why this is happening? I am currently running CM11 M-12 with 1.03/27 radio (have also tried the 1.03/.33 radio with same result).

I spoke with tech support from Cel-Fi and they mentioned that unlocked phones (which my N4 is) sometimes run into this specific issue that I am having. Any help or insight would be greatly appreciated.
[Nexus 4 General] googleygoggles:
WAIT! He said the S4 not N4. As in, Galaxy S4
[Nexus 4 General] freezeburn:
Well I looked at the post you linked and everything seemed to be what needed to be on my phone, I followed every step and everything was as it needed to be but I also noticed that the OP said the following

You should be set to go! You'll see the difference when your signal bar reads "4g" instead of "H+" or "H"

He doesn't say it would switch to LTE but that it switches to 4g, did you maybe install an icon pack for the notification bar? or maybe the rom you're using? I'm using paranoidandroid.
[Nexus 4 General] hristopelov:
if your Nexus shows 4G icon that means you are on LTE, you can at this point go also to Settings-->About Phone-->Status and look what it sais under "Mobile Network" it should be LTE.

If the other poster that was trying to help you sees LTE icon in the notification bar, that means it came with his ROM as a lot of then now come with the LTE settings preinstaled and some differend icons.
[Nexus 4 General] mgorman:
Setting the apn protocol to ipv4/ipv6 will cause problems with certain apps. You should leave it at ipv4. It makes no difference
[Nexus 4 General] bentez2003:
Has anyone on the UK three network tried this? Did it work and did you see increased speeds?
[Nexus 4 General] Pvt WhoOkid:
This has been working great. Running cm10 and now with this boost of internet speed woo hoo. I'll keep my nexus over any other phone.
[Nexus 4 General] paranoid android85:
Didn't know this was possible in the u.s. Thanks!
[Nexus 4 General] aka369:
Just switched from the .33 to the .27 radio... BIG speed difference (see attached), nearly doubled my speed in South Jersey.

Calls still work fine, GPS seems good as well.

cm-10.1-20130711-NIGHTLY w/mako-LTE-enabler flashed after install.
[Nexus 4 General] kpjimmy:
Did you check *#*#INFO#*#* to make sure you are on LTE/GSM(auto)?

Then make sure your apn (Second line from the top) is listed as fast.t-mobile.com, NOT wac.tmobile.com or whatever the default is.

Then go to mobile networks and right under the Data Roaming line, look at the Network Mode to make sure you have LTE/GSM/WCDMA is selected there.