AT&T APN Settings for LTE - Xperia Z3 Compact Q&A, Help & Troubleshooting

Anyone else on AT&T unable to get LTE? The APN settings that auto-downloaded are correct according to AT&T's documentation, but I'm only getting H+.

Your GPRS could be disconnected. I'd you use app advanced signal status you can look at settings Beyer to see if your set up correctly
MasterBrick SCH-I545 Galaxy S4, XdA mobile app...

I had to use my girlfriends IMEI for her Nexus 5 for it to pick up LTE. Before that, I was only getting H+. Try to get an IMEI of another ATT LTE Android phone and it should do the trick!

Can't get LTE to work
I need some help. I have the new, unlocked, Sony Xperia Z3 Compact and I can't get on the AT&T LTE network as well. Here are the steps I have taken:
The Setup
I have a Samsung Galaxy S4 that is on the LTE network with no problem
My AT&T account had a Lumia 820 device tied to my account (and old device of mine) and it worked fine for LTE on all of my future pones, including my S4
I purchased an unlocked D5803 Z3c from Handtec
My Activate Attempt
Went to the AT&T store to pick up a new nano sim card
I gave my new (Sony) IMEI number to the AT&T rep (stupid move, clearly) and they loaded it under my account
With the new sim, my Z3c could place calls and send/receive text messages
Data would not work
My Resolution Steps
I looked up APN settings online and tried several different variations
The HSPA+ Cingular APN settings worked, but left me without LTE service
I could not get the mobile.att.net APN and LTE settings to work
Reading Android Central and XDA, I discovered that others had this issue as well
Using forum advice, I called AT&T
The AT&T rep did confirm that my Sony IMEI number was registering as a "2G" phone, which is why I did not get LTE access
I put one of my extra LTE device IMEI numbers on my account
My phone still won't connect to the LTE network
I notice that even though they registered an LTE phone (and they confirmed it came up LTE), my AT&T account page shows an old flip phone silhouette
The rep noted that there was nothing else they can do...so I basically have to deal with it
I'm posting on XDA to leverage the wisdom of this crowd
I remain confident that this will get resolved, yet frustrated at the same time
I'm at a loss and wonder if I have to activate this nano sim in another supporting device or the like. Thoughts?
Thanks in advance for your help.

No clue, but AT&T tech support confirmed that my IMEI is registered and my previous two devices were all LTE devices. I have no idea what's going on either.

lolstebbo said:
No clue, but AT&T tech support confirmed that my IMEI is registered and my previous two devices were all LTE devices. I have no idea what's going on either.
Click to expand...
Click to collapse
Are you having the same issue? Do you see the cartoon sketch of a flip phone in your account as well?

What you have to do is give them the imei of an LTE capable phone. It absolutely does not matter that you will not actually be using that phone.
If you already have an LTE phone, just switch your SIM to your z3 when it arrives. It is absolutely unnecessary to call AT&T with your new IMEI. Anything AT&T tells you to the contrary is flat out wrong.

Issue resolved!
Bottom line...do not give these clowns your Xperia IMEI number.
When they entered the IMEI number it flipped my data plan from a grandfathered unlimited plan to a pay-per-use plan with no LTE (why they couldn't figures this out last night, it beats me). He was talking about my wife's plan and her unlimited data. I then noted "mine is unlimited too" and then said it wasn't. You can only imagine how things went from there.
The unrecognized IMEI number automatically switched me off of my plan.
They have me on a temporary 3GB plan, as the support rep couldn't get me back on the unlimited plan. They have to send the change to their back office team and it will take a week to get it back.
My phone now has the 4G icon versus H+.
Sent from my D5803 using XDA Free mobile app

ktcred said:
Are you having the same issue? Do you see the cartoon sketch of a flip phone in your account as well?
Click to expand...
Click to collapse
Nope, it actually still shows my previous LTE-capable phone.

I actually also initially had this issue ; I was sitting in the AT&T &T store on the phone with tech support until the sales rep realized my phone wasn't showing up in the system as an LTE device. He input a bogus LTE IMEI for me, after which I restarted my phone. It's been working for me since then

Whelp, I guess I'll go to the AT&T store again later, then.

So everything that is claiming to have LTE ----> Do you have a 4G icon on your phone or LTE? I am in US, went to ATT store ---they entered an imei of a Samsung Galaxy S5 and now it shows 4G. If you go into mobile networks preferred network mode it says 4G preferred/wcdma/gsm. I am assuming this is just due to the UK software version not being the same as US...

macklobell said:
So everything that is claiming to have LTE ----> Do you have a 4G icon on your phone or LTE? I am in US, went to ATT store ---they entered an imei of a Samsung Galaxy S5 and now it shows 4G. If you go into mobile networks preferred network mode it says 4G preferred/wcdma/gsm. I am assuming this is just due to the UK software version not being the same as US...
Click to expand...
Click to collapse
Says 4G. I think we are good
Sent from my D5803 using XDA Free mobile app

IMEI problem rectified, they reverted it to my previous phone's IMEI. Now displaying 4G. Sweeeeeetness.

It's just silly that AT&Ts LTE is tied to the IMEI in their system and not simply having an LTE capable phone.
I ported a line to use with my Z3c and gave them the IMEI of an AT&T HTC One so that LTE would work, but they would only send me a micro sim because according to the IMEI that's the sim I need. Tried to tell them I need a nano sim but the gal on the phone said she couldn't send one, I'd have to go to a store pick one up.

If you are going from an LTE phone that uses a nano SIM card to the Sony Xperia Z3 compact, it is not necessary to contact AT&T. You will need to manually add the APN settings on your Sony Xperia Z3 compact. Here is the path to get to the APN settings..
Settings > More > Mobile networks > Access Point Names > press + to add a new APN
Enter in the following settings listed below
Name ATT Phone
APN phone
Proxy Not set
Port Not set
Username Not set
Password Not set
Server Not set
MMSC http://mmsc.mobile.att.net
MMS proxy proxy.mobile.att.net
MMS port 80
MCC 310
MNC 410
Authentication Type None
APN type default,mms,supl,hipri
APN protocol IPv4
Bearer Unspecified
Save the changes you made, select the APN you just created and reboot the phone. Everything should be working from there.
Here is where I got the information from: http://www.att.com/esupport/article.jsp?sid=KB424489&cv=820&_requestid=838329#fbid=ecLfo9YLvXa

So I do have the 4g icon in my status bar. Does this mean that LTE is working fine?
The only reason I am asking is because on the MY ATT page I do only see the silhouette of a flip phone.
Edit: My phone automatically downloaded internet and MMS settings when I first booted it up. Is this what others are doing?

Alex2x3 said:
So I do have the 4g icon in my status bar. Does this mean that LTE is working fine?
The only reason I am asking is because on the MY ATT page I do only see the silhouette of a flip phone.
Edit: My phone automatically downloaded internet and MMS settings when I first booted it up. Is this what others are doing?
Click to expand...
Click to collapse
Yes, you are getting LTE on your phone
LTE = 4G in Europe
4G = H+ in Europe
3G
etc
If you do a speed test, you will see that you are getting LTE speeds on your phone

Problem here too. I just went in to get a nano sim. The guy hooked up my number from a note 2. Does not show data. He said I needed to put in my IMEI number from the box. I didn't from recommendations on here. The problem is that I didnt have a rebutle sp? Because I really don't know how it works. He said if my note 2 was lte, it should work. I don't know what the heck to do

Notchr302 said:
Problem here too. I just went in to get a nano sim. The guy hooked up my number from a note 2. Does not show data. He said I needed to put in my IMEI number from the box. I didn't from recommendations on here. The problem is that I didnt have a rebutle sp? Because I really don't know how it works. He said if my note 2 was lte, it should work. I don't know what the heck to do
Click to expand...
Click to collapse
I would try again, maybe try to get a different service rep. The IMEI from an AT&T Note 2 should work.

Related

[Q] Verizon LG G2 GSM Support

Hello All,
I have been thinking about traveling to Japan this coming year; I have looked at Verizon's International plan, and it seems like they are very pricey.
I have heard that the VS980 has GSM support, with no LTE, which is fine. I have looked into the h20 network, as they have exceptional prices for their international plan.
I have googled it and have gotten mixed answers, so I came here. I have a h20 sim card, and it pulls the APNs, but does not get any service. Is it that I am using a custom rom?
Thanks for the help in advance! :laugh:
aerial irrntsrt
Please someone answer this. I'm in a similar boat.
I'm on the stock verizon ROM. I have a Piranha mobile sim card. I am testing the setup in the US to verify it works. It connects to the T-mobile/Piranha voice and sms network, but data is not working.
Their setup instructions call for setting the apn to openroamer.com, but no mention on the mnc or the mcc values. If I just set the apn to openroamer.com I'm able to save and select it, but as soon as I change the mnc or mcc values to t-mobile the apn disappears after I save. Do I need to set the mnc and mcc values to something specific? I tried to track down exactly what they do, with no luck.
I see mention in another thread that Verizon locks the phones to be unable to connect to other US domestic networks. They also mention that once I'm overseas I'll be fine. I'm skeptical.
I was thinking of going to the t-mobile store to see if I could borrow a sim card to confirm it's a firmware issue. I would rather not root at this point. Any other courses of action?
Thanks for shedding any light.
buttercm said:
Please someone answer this. I'm in a similar boat.
I'm on the stock verizon ROM. I have a Piranha mobile sim card. I am testing the setup in the US to verify it works. It connects to the T-mobile/Piranha voice and sms network, but data is not working.
Their setup instructions call for setting the apn to openroamer.com, but no mention on the mnc or the mcc values. If I just set the apn to openroamer.com I'm able to save and select it, but as soon as I change the mnc or mcc values to t-mobile the apn disappears after I save. Do I need to set the mnc and mcc values to something specific? I tried to track down exactly what they do, with no luck.
I see mention in another thread that Verizon locks the phones to be unable to connect to other US domestic networks. They also mention that once I'm overseas I'll be fine. I'm skeptical.
I was thinking of going to the t-mobile store to see if I could borrow a sim card to confirm it's a firmware issue. I would rather not root at this point. Any other courses of action?
Thanks for shedding any light.
Click to expand...
Click to collapse
It turns out to be a activation error for me, after I correctly activated the sim, it worked! (silly me!)
For your problem, I looked on your carriers website/ help websites and there are no values except the APN.
You might need a data plan active. I would try using other carriers, because for me the h20 sim worked with data.
Verizon has no control over what network you go on either, FCC has a couple laws that prevent from Verizon doing that except exclude the hardware needed to connect to other networks.
Sorry I could not help.
I popped my Aio Wireless (AT&T) SIM from my Nexus 4 into my G2 and after a little APN tweaking I had HSPA+ working with no issues. It is my understanding if you have AT&T Band 4 LTE (limited markets) and the correct service providor, it will even connect 4G/LTE on AT&T networks. I swapped my Verizon SIM back in and removed the APN's and all was well on Verizon again. I am stock (KitKat) and rooted with only a few few Xposed modules installed, no custom ROM.
It sounds like, from reading the posts above, the Verizon LG-G2 IS a World Phone and should function straight on from stock on a UK provider like Three just by purchasing a sim and plugging it in then configuring the APN settings !
The problem is that when my Susan went just this morning to a Three store in London, the guy there told her that her Verizon LG-G2 was LOCKED to Verizon network only, and that she would have to do something like obtain an unlock code because the phone would not work on any other provider until she did that.
Verizon's International folks told us earlier that the phone would work fine, given GSM frequency issue restrictions, overseas and there was no need for any UnLock proceedure or code.
Does she just need to find a competent tech at a different Three store ?
Or is she going to be unable to play Ingress the whole two weeks she is over there in England and Scotland ?
Update...both Three and Vodaphone folks in London have now told her that the Verizon LG-G2 is carrier locked and cannot be used without Verizon unlocking it on any other network. So, Verizon was wrong and she is limited to WiFi only for the next two weeks ?
Sent from my Nexus 5 using Tapatalk
trent999 said:
Update...both Three and Vodaphone folks in London have now told her that the Verizon LG-G2 is carrier locked and cannot be used without Verizon unlocking it on any other network. So, Verizon was wrong and she is limited to WiFi only for the next two weeks ?
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
No global mode Verizon phones are carrier locked.
Sent from my Nexus 4 using Tapatalk
It is very odd. We tried it on a T-Mobile sim over here before she left, I am pretty sure, and it just worked. Still, over in London Three & Vodaphone say it is locked and useless on their networks and their sims don't work.
Maybe it is subsidy-locked ?
Maybe they just didn't set the APN and data settings right at the stores ?
Sent from my Galaxy Nexus using Tapatalk

Tmobile Note 4 on At&t losing lte

So I put my SIM in from my g3 (which was T-Mobile and getting great lte) and phone was working fine then for some reason reverts to 4g and no lte. Check my account online and my phones imei shows up as an old blackberry which downgrades my plan automatically.
I can stick SIM back in old phone get lte, switch again and it reverts. Called and customer service can't seem to help. Anyone else with T-Mobile note on att having issues ?
I have been having a different issue. Every couple of days, I would loose all T network connection as the APN "ATT Phone" would become unselected for a as of yet undetermined reason. If I select it, everything works just fine (include LTE) till it unselects itself a day or two later. I cannot determine the cause.
If I look on my account it shown some "dumb" phone whereas I used to have a Note 2. I do get LTE. I use these APN setting, which seem to show up as default when I press the reset on the APN menu:
Name ATT Phone
APN phone
Proxy Not set
Port Not set
Username Not set
Password Not set
Server Not set
MMSC http://mmsc.mobile.att.net
MMS proxy proxy.mobile.att.net
MMS port 80
MCC 310
MNC 410
Authentication Type None
APN type default,mms,supl,hipri
APN protocol IPv4
Bearer Unspecified
See if these are the setting your SIM selects. If not, you can try unselecting "ATT Phone", change it and select it after saving. But perhaps you need a new SIM which T should be happy to give (or maybe it is a couple of $) you if you visit a store and say you lost your phone and the sim.
Thanks for the input. Yes I have tried deleting apn settings and adding the ones like you listed. It didn't help. Get 4g but no lte. Went to att they pretty much just said too bad it's not our problem cause it's a T-Mobile phone.
So far no issues running it in Manhattan for a couple weeks - I can't tell the difference between this, my OnePlus One, and my old AT&T Note 3 - all using the same AT&T SIM.
I did get some slow data speeds while in Williamsburg last weekend, but my wife's AT&T iPhone 6 had the same issues so I don't think it was a phone issue.
dawheat said:
So far no issues running it in Manhattan for a couple weeks - I can't tell the difference between this, my OnePlus One, and my old AT&T Note 3 - all using the same AT&T SIM.
I did get some slow data speeds while in Williamsburg last weekend, but my wife's AT&T iPhone 6 had the same issues so I don't think it was a phone issue.
Click to expand...
Click to collapse
Oh okay. I don't know why mine is having this issue. Have used several T-Mobile phones on att without issue
Sorry to say it appears the Note 4 is polled or "phones home" and immediately shows it's non-approved IMEI. When I change the SIM from my T-Mobile Note 4 to my ATT Note 2 the MyATT page almost instantly changes from BlackBerry7100 to "Smartphone". Not sure what to do because it'll surely cost my LTE speed.
I've been using a T-Mobile Note 4 on AT&T since the week it launched without these problems. I have a feeling I'm jinxing myself or that it's only a matter of time before it does happen. What's weird to me is that on the AT&T page it shows I still have my old LG G3.
Are you guys using custom ROMS or Kernels or anything? I have pretty much rooted from day one and froze a bunch of stuff and immediately got rid of the Carrier IQ.
Well let me chime in. I never got lte on the note 4 until I got tired of slower speeds haha. I had an iPhone so I went to at$t to get another sim card but brought my s3 so they wouldn't know of the note 4. Problem I think was putting it straight into the note 4 and not settle into the s3 first and get all required info. So I was without LTE for a while until I decided to try again for it. So I called at$t and told them I was not getting LTE on my phone 5s so they changed the imei # to the one for the 5s. Still didn't get any lte so I went to an at$t store when they said to pick up a new sim. I used the iPhone probably for about an hour and got LTE. So from that point I put the nano sim into the note 4 and now I've been getting lte for over two weeks and great signal coverage. On my account it says I'm using a dumb phone but when I go into upgrade options it says I'm on an iPhone 5s.
---------- Post added at 10:55 AM ---------- Previous post was at 10:54 AM ----------
And yes I'm using a nano sim not the usual micro sim

AT&T and LTE?

Anyone using LTE on the Nexus 6 with AT&T? Mine from Motorola came today. I'm just getting HSPA though. When I try to select preferred network LTE, the button is filled but the text doesn't say lte. Previous phone was the 6 Plus. Any help? Talked to AT&T and they added the phone but no worky!
breezing on the LTE here
dwd3885 said:
Anyone using LTE on the Nexus 6 with AT&T? Mine from Motorola came today. I'm just getting HSPA though. When I try to select preferred network LTE, the button is filled but the text doesn't say lte. Previous phone was the 6 Plus. Any help? Talked to AT&T and they added the phone but no worky!
Click to expand...
Click to collapse
make sure you have the correct APN settings,
I had issues at first but turned on airplane mode for 5 minutes then after I turned it off I had LTE
dwd3885 said:
Anyone using LTE on the Nexus 6 with AT&T? Mine from Motorola came today. I'm just getting HSPA though. When I try to select preferred network LTE, the button is filled but the text doesn't say lte. Previous phone was the 6 Plus. Any help? Talked to AT&T and they added the phone but no worky!
Click to expand...
Click to collapse
Lte works fine and Att is bad where I live.
dwd3885 said:
Anyone using LTE on the Nexus 6 with AT&T? Mine from Motorola came today. I'm just getting HSPA though. When I try to select preferred network LTE, the button is filled but the text doesn't say lte. Previous phone was the 6 Plus. Any help? Talked to AT&T and they added the phone but no worky!
Click to expand...
Click to collapse
I have the same issue, except I was not able to even select LTE before calling the tech support.
The tech support has confirmed my data plan and APN setting are correct.
Can it be like the tech support said it might be the sim card? Or my APN setting is actually incorrect?
Anyone has solution for this issue?
If someone with LTE can post his/her APN setting, I'd be really thankful.
bigwhiteegg said:
I have the same issue, except I was not able to even select LTE before calling the tech support.
The tech support has confirmed my data plan and APN setting are correct.
Can it be like the tech support said it might be the sim card? Or my APN setting is actually incorrect?
Anyone has solution for this issue?
If someone with LTE can post his/her APN setting, I'd be really thankful.
Click to expand...
Click to collapse
Here ya go
Sent from my Nexus 6
Thanks a lot! It does allow me to use LTE.
I found out my phone switched to LTE couple minutes after I post the reply.
I had another APN setting, and it also works with the setting you provided.
So the key here is to talk to a knowledgeable tech support, and confirm your plan, IMEI, and APN setting is correct on his/her end.
The tech support mentioned my device displayed on his end was not Nexus 6, so I provided him with my IMEI, and that is probably why I was able to select LTE for my prefer network.
I'm on AT&T with an AT&T preordered 32GB. I've got my grandfathered unlimited LTE (according to the tech support chat dude) and the IMEI matches his database. I'm still only getting on average 1-3Mbps down and .02-1Mbps up.
I've double checked APN settings, tried the old "phone" APN settings, spoke with chat who advised me to try a new SIM or exchange the phone, reboots and all. I'm pretty much in DC, so coverage should be a non-issue. I've got full bars and the indicator shows "LTE". I'm at a loss and was wondering if anyone on here had any bright ideas?
I have AT&T, but purchased my unit at T-Mobile. I switched sim cards out the box, and had LTE with no issues.
Have no problems with mine (and yes, mine is a freshly rooted AT&T model Nex6--yes, you can oem unlock and root it just fine).
Of course, I also live in one of those parts of the country where the Deathstar Telco tends to have the best coverage so there's that; I'd be shocked if I DIDN'T get LTE around here
(Which is rather more than I can say for Sprint around here, but that's neither here nor there)

[Q] Straight Tall APN issue with SM-910T

So I recently got a T-Mobile Samsung Galaxy Note 4. As we know, it's unlocked 100% without any special root methods or entering in codes into the dial pad. With that being said, I popped in an LTE Straight Talk SIM card, transferred my old number to the new SIM and configured the APN and for a long while it was working fine with no issues. Then out of the blue, I had no data. It absolutely quit without warning. I go to check the APN settings I had previously and they were gone. I had redone everything and saved the settings. However, when I go back out a menu, no Straight Talk APN. I did the same thing again....and once again no APN settings. Just the default T-Mobile LTE APN.
So I'm at a loss. It was working fine previously and now I cannot set APN settings. I have reset the phone more than once (reluctantly). Any thoughts? Any help would be appreciated since I'm paying those bastards $45 and some change a month for service I cannot get. Also as a note, I can receive and send text messages with no problem. Calling number results in "you are not registered on a network," but I know the fix for that.
blckdragn22 said:
So I recently got a T-Mobile Samsung Galaxy Note 4. As we know, it's unlocked 100% without any special root methods or entering in codes into the dial pad. With that being said, I popped in an LTE Straight Talk SIM card, transferred my old number to the new SIM and configured the APN and for a long while it was working fine with no issues. Then out of the blue, I had no data. It absolutely quit without warning. I go to check the APN settings I had previously and they were gone. I had redone everything and saved the settings. However, when I go back out a menu, no Straight Talk APN. I did the same thing again....and once again no APN settings. Just the default T-Mobile LTE APN.
So I'm at a loss. It was working fine previously and now I cannot set APN settings. I have reset the phone more than once (reluctantly). Any thoughts? Any help would be appreciated since I'm paying those bastards $45 and some change a month for service I cannot get. Also as a note, I can receive and send text messages with no problem. Calling number results in "you are not registered on a network," but I know the fix for that.
Click to expand...
Click to collapse
Try setting the APN with this app https://play.google.com/store/apps/details?id=com.tracfone.straighttalk.stdatasettings
Sounds like your phone got black listed. Did you buy it from Tmobile? If you bought it from some one else it was either a stolen phone or the previous own stopped paying for it.
Sent from my SM-N910T using XDA Free mobile app
ShrekOpher said:
Sounds like your phone got black listed. Did you buy it from Tmobile? If you bought it from some one else it was either a stolen phone or the previous own stopped paying for it.
Click to expand...
Click to collapse
I had bought the phone from a local gas station owner (who had 2 other T-Mobile phones with him). It was working while he showed me the phone (he had gotten several text message and Facebook updates). He then reset it. I bought a Straight Talk SIM kit and went to work. I had working data until the next day. I had played around with some more internal settings, like updating the touch sensitivity and more. Everything was working until I refreshed the Wi-Fi antennae. Don't think that would have anything to do with the 4G/LTE radios or regular antennas. Overall, it was working, so I don't see how it could just magically stop.
Sent from my SM-N910T using XDA Free mobile app
blckdragn22 said:
I had bought the phone from a local gas station owner (who had 2 other T-Mobile phones with him). It was working while he showed me the phone (he had gotten several text message and Facebook updates). He then reset it. I bought a Straight Talk SIM kit and went to work. I had working data until the next day. I had played around with some more internal settings, like updating the touch sensitivity and more. Everything was working until I refreshed the Wi-Fi antennae. Don't think that would have anything to do with the 4G/LTE radios or regular antennas. Overall, it was working, so I don't see how it could just magically stop.
Sent from my SM-N910T using XDA Free mobile app
Click to expand...
Click to collapse
If he bought the phone on a lease from T-MOBILE and never fully paid it off T-Mobile would black list it. Or if he sold you a lost\stolen phone.
You can contact T-Mobile or check the IMEI on one of those checker sights to see if it has been blacklisted.
Sent from my SHIELD Tablet using XDA Free mobile app
You can check to see if you're blacklisted by visiting the T-Mobile website and using their IMEI checker. If you're blacklisted you would not be able to place calls. I will attach sample AT&T APN that works for me. I'm on Cricket and not StraightTalk but it may work for you.
For all who helped out on this post, THANK YOU! I figured what my issue was. SIM card is fine and the data settings work as long I don't configure the MCC & MNC settings. Changing the MNC from 260 to 410 is what caused my saved APN to disappear. Not sure why that happens, but if any of you have an idea of why, direct me to the thread that explains this or if you know, quote this reply. And another thing, I am able to send texts and make calls, but due to the location I was in, texts sent at half the speed of smell and making a call was impossible due the phone claiming I was "not on a registered network" even though ST is a network (duh). I have no service issues on my Note 3 N900A when I that. Anyone think it could be because AT&T's device antennas differ from that of a T-Mobile Note 4? Personally, I don't think they would since they are both GSM and operate on the same bands (I would think), even though the Note 4 has "newer" technology. Not really worried about data, texts or calls since I have Wi-Fi in said location.
Again, thanks to those that helped me out. And, again, if anyone has any ideas to the information said above, by all means give your say or direct me to where there is substantial info.

Question Data not connecting on ATT since "3G switchoff"

So on Monday ATT decided to deactivate my sim card because they believe my phone is incompatible with their network now. All my bars went to 0 with an x on it and I couldn't do anything on the phone. I went to an ATT store, got them to give me a new activated sim and I put it in my phone and all my bars came back.
My phone says VoLTE again too by the signal bar area. I also tested a text and it went through fine. I received a phone call and while it works fine, it sounds like junk now. Like it is no longer actually using VoLTE like it always has. My phone doesnt seem to have any data however, when it should have LTE just fine. I also cannot make any calls, even though it says VoLTE on the phone, it just re-routes to ATT customer service instead of going through with the call.
When I go into the network area in settings it says no IP address either. I looked and my APN is set to nxtgenphone, Preferred Network Type selected on LTE. Before ATT deactivated my sim card LTE has always worked fine, and LTE should still work fine. It is only the 3G network being shut down. Also given the fact I have the VoLTE icon the phone is apparently connecting somewhat to an LTE network.
So does anyone know how to fix settings to get data working again? Is it just an APN that needs to change? What is everyone else doing with the network shutdown and has anyone else had issues like this?
I had the exact same issue, your issue is in fact APN settings I'm having them as well. Try deleting your current APN and putting in a new one. Once I got a new sim my APN reset I could call but no data and no text. I have half of the APN information in place and have data and basic text, but once I input the MMS port the APN data disappears still trying to figure that out. Not sure if anything I typed is helpful but at least you know your not alone with a mi11 on ATT and it can work
EniGmA1987 said:
So on Monday ATT decided to deactivate my sim card because they believe my phone is incompatible with their network now. All my bars went to 0 with an x on it and I couldn't do anything on the phone. I went to an ATT store, got them to give me a new activated sim and I put it in my phone and all my bars came back.
My phone says VoLTE again too by the signal bar area. I also tested a text and it went through fine. However, my phone doesnt seem to have any data, when it should have LTE just fine. I also cannot make any calls, even though it says VoLTE on the phone, it just re-routes to ATT customer service instead of going through with the call.
When I go into the network area in settings it says no IP address either. I looked and my APN is set to nxtgenphone, Preferred Network Type selected on LTE. Before ATT deactivated my sim card LTE has always worked fine, and LTE should still work fine. It is only the 3G network being shut down. Also given the fact I have the VoLTE icon the phone is apparently connecting somewhat to an LTE network.
So does anyone know how to fix settings to get data working again? Is it just an APN that needs to change? What is everyone else doing with the network shutdown and has anyone else had issues like this?
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moswen said:
I had the exact same issue, your issue is in fact APN settings I'm having them as well. Try deleting your current APN and putting in a new one. Once I got a new sim my APN reset I could call but no data and no text. I have half of the APN information in place and have data and basic text, but once I input the MMS port the APN data disappears still trying to figure that out. Not sure if anything I typed is helpful but at least you know your not alone with a mi11 on ATT and it can work
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Thanks for the reply. I tried deleting the MMS port and also the proxy just now and data didnt come back. I will try searching around for more APN info for how phones are supposed to connect now and see if I can find anything.
It looks like from what I could find that it is due to an IMEI whitelist ATT has, blocking data connection on any device not in their whitelist. The solution seems to be to root the phone and change your IMEI to a whitelisted model.
While my phone is rooted my IMEI is not cloned I definitely would not share my IMEI with ATT. When I got my sim card yesterday I had the attendant activate but I did not provide my phone so he did not get the IMEI from my phone. If you got a sim and they input your IMEI that could be a problem possibly. Just a suggestion to try and get a sim activated at a store without your phone.
I had also heard that most ATT MVNOs were not having the device whitelist forced on them yet, so I went and tried 2 different ones yesterday. Both failed to get the phone working on their network with their sims.
Before I went through the hassle of rooting (and most likely losing payments) I tried ATT again anyway. I used their online customer service chat and the first person I chatted with said he could help me with the lte data problem and the IMEI issue. I was skeptical, but he actually did fix it all up. He just needed my sim ICCID and my phones IMEI1 and he submitted the info to their backend people for adding to their system. It took almost an hour and a half for it to get added, but overall it was a pretty painless process and I was browing the web most of the time while waiting in chat. I now have LTE data again, VoLTE again, and "5G" too (which ATT 5G is really just one or two more features than normal LTE and is no faster in speed and uses LTE data bands). I attached a screenshot showing the data and VoLTE working on my phone. The first signal is ATT, the second is TMobile (which has always worked and never had an issue, their 3G network shutdown is going on for another 4-5 months)
EniGmA1987 said:
I had also heard that most ATt MVNOs were not having the device whitelist forced on them yet, so I went and tried 2 different ones yesterday. Both failed to get the phone working on their network with their sims.
Before I went through the hassle of rotting (and most likely losing payments) I tried ATT again anyway. I used their online customer service chat and the first person I chatted with said he could help me with the lte data problem and the IMEI issue. I was skeptical, but he actually did fix it all up. He just needed my sim ICCID and my phones IMEI1 and he submitted the info to their backend people for adding to their system. It took almost an hour and a half for it to get added, but overall it was a pretty painless process and I was browing the web most of the time while waiting in chat. I now have LTE data again, VoLTE again, and "5G" too (which ATT 5G is really just one or two more features than normal LTE and is no faster in speed and uses LTE data bands). I attached a screenshot showing the data and VoLTE working on my phone. The first signal is ATT, the second is TMobile (which has always worked and never had an issue, their 3G network shutdown is going on for another 4-5 months)
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Happy you are back up and running and I'm glad that you found someone at ATT to do the fairly easy work of getting your IMEI cleared. Lots of people have been worried about devices not working on ATT because of this whitelist issue glad to see there are workarounds just wish ATT didn't make it so convoluted.

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