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Hey all,
I updated my AT&T Nexus One with stock GRI40 and all of a sudden SMS messages stopped working both to and from the phone. All other features work including calls, etc.
In an effort to fix the issue I reflashed to stock Froyo FRF83G (which SMS worked on) and then rooted and flashed the rooted version which is available from this forum as well. This still failed in the exact same way. Messages are not received and nobody receives messages I send.
Has anyone else experienced similar issues? Could this build not work properly on AT&T phones or is there something I need to do to get it working. Is there any known method for debugging SMS between my phone and the provider?
Thanks in advance.
X
Dumb question but did you check your APN's to make sure they weren't changed in any way?
Should be under settings, wireless, and then APN
Galloway said:
Dumb question but did you check your APN's to make sure they weren't changed in any way?
Should be under settings, wireless, and then APN
Click to expand...
Click to collapse
The APN looks correct.
Name: Cingular 410
APN: wap.cingular
Proxy: wireless.cingular.com
Port: 80
Username: [email protected]
Password: CINGULAR1
Server: cingulargprs.com
MMSC: http;//mmsc,cingular,com/
MMS proxy: wireless.cingular.com
MMS port: <not set>
MCC: 310
MNC: 410
Authentication Type: <not set>
APN Type: default,supl,mms
Any other ideas? (I had to modify the MMSC link above to post so the ; and the ,'s are actually : and .'s).
Thanks,
X
just to rule out other factors, can you try sending messages using another phone with the same sim card?
Likely a problem with your carrier or account, and not the phone.
Also, this should have been posted in the Q&A forum, not here.
Please pay attention to what you're doing.
This is exactly what it was. AT&T somehow deactivated my SMS setup off the account completely. Took them a day to figure it out though. Thanks for the help guys.
--X
Sent from my Xoom using XDA Premium App
Wheel just keeps a spinnin and spinnin!
Wonder if it has to do with apn settings? They do indicate mms and Internet on the bottom setting.
Any suggestions appreciated? Who wants to be able to create these cool notes and not be able to send??
whats your plan, per or post pay, and what apn settings did you use, there are a lot of threads which address this.
I have a GoPhone $50 unltd.with apns suggested for this.
I DID walk in to att with my Note, and said cust service suggested I ask for a new sim cars and got a 4G card (vs the designated GoPhone) one, and that's when the problems started now that I think about it.
So my apn needs might have changed.
Ill have to play around with them.
Network speeds are way better...just no MMS.
rockky said:
I have a GoPhone $50 unltd.with apns suggested for this.
I DID walk in to att with my Note, and said cust service suggested I ask for a new sim cars and got a 4G card (vs the designated GoPhone) one, and that's when the problems started now that I think about it.
So my apn needs might have changed.
Ill have to play around with them.
Click to expand...
Click to collapse
definitely do not disclose to att that you have a smartphone.
I have the 50/month unlimited voice/text/web/data gophone att plan and my speeds are very good. i cant compare to network speed but im coming from tmous3g and it is close.
i registered the sim card in an older nokia e72, then once it worked fully, i swapped it into my gnote. not sure if att will catch the data usage and ding me for the overage as if it were a smartphone, but until that happens this is a brilliant workaround.
Cingular APN from the SGS2:
Name: Cingular 410
APN: wap.cingular
Proxy: null
Port: null
Username: [email protected]
Password: CINGULAR1
Server: cingulargprs.com
MMSC: http://mmsc.cingular.com
MMS Proxy: wireless.cingular.com
MMS Port: null
MCC: 310
MNC: 410
Authentication type: null
APN Type: internet + mms
Question: I have the same APN settings as you just posted on my SGS 2, just curious what average speeds are you getting on G Note? I am getting about 3 mgps downld, 1.1 upload.
I tried to change the apn to different settings and no speed difference. Is this setting faster on G nOte?
Thank you
carlitos66 said:
Question: I have the same APN settings as you just posted on my SGS 2, just curious what average speeds are you getting on G Note? I am getting about 3 mgps downld, 1.1 upload.
I tried to change the apn to different settings and no speed difference. Is this setting faster on G nOte?
Thank you
Click to expand...
Click to collapse
i haven't checked yet but id guess im in that range, which im quite happy with at 50/month. i'm at work currently and the signal is bad here so ill have to check later or tomorrow.
best,
jason
4g apn
there is another thread that list an APN just for the 4g sim from att. search for that thread.
You got off topic
The question was about MMS not working on the Note, not about your plans. Please stick to the topic in order to help this person
I was having issues with my mms as well. I tried multiple apn settings but nothing. What finally fixed it was inputting the apn settings below in the go SMS application itself. And using those apn settings on the phone. My speeds are not as good as a couple of the other apns but I now have working mms and fully functional phone. I pulled the apn settings off of my infuse.
Name
AT& T 310 410
Apn
Wap.cingular
MMsc
http://mmsc.cingular.com
Mms proxy
wireless.cingular.com
Mms port
80
Mcc
310
Mnc
410
Apn type
Internet + mms
Only change these settings and leave everything else (not set).
Sent from my GT-N7000 using xda premium
I'm also on AT&T and for some reason my APN has changed a couple of times on it's own. . In fact it just happened earlier today and I had the exact same problem as you. For some reason the MMS port was blank so I changed that back to 80. Also there was info in the username and password and I deleted both out. It worked again right after I made those changes.
I can give you the rest of my settings if those changes don't work for you. I'm using the settings that have been posted for AT&T unlimited data.
I copied the settings out of my brothers cappy, and finally got MMS working. Settings in the other thread weren't working for me. Im getting 3-7Mbs down and a MB up. Im post paid, with a 4G sim and so called "unlimited data".
Name: ATT WAP
APN: wap.cingular
Proxy: wireless.cingular.com
Port: 80
Username: (not set)
Password: (not set)
Server: (not set)
MMSC: http://mmsc.cingular.com
MMS Proxy: wireless.cingular.com
MMS Port: 80
MCC: 310
MNC: 410
Authentication type: (not set)
APN Type: internet + mms
Current config that worked for a while and suddenly stopped:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Is today your renewal date for your service? ST has changed there settings for the APN. You have to change your APN on your renewal date or lose data.
http://www.straighttalksim.com/support.php
FIELD SETTINGS
NAME straight talk
APN tfdata
PORT 80
MMSC http://mms-tf.net
MMS PROXY mms3.tracfone.com
MMS PORT 80
I found this out on the 4th when I lost data and called ST. Needless to say they didnt even tell me about this.
mikec628 said:
Is today your renewal date for your service? ST has changed there settings for the APN. You have to change your APN on your renewal date or lose data.
http://www.straighttalksim.com/support.php
FIELDSETTINGS
NAMEstraight talk
APNtfdata
PORT80
MMSChttp://mms-tf.net
MMS PROXYmms3.tracfone.com
MMS PORT80
I found this out on the 4th when I lost data and called ST. Needless to say they didnt even tell me about this.
Click to expand...
Click to collapse
Didn't work for me. Data seems okay my main issues are with MMSC MMS proxy and MMS port. I got 6.2Mbps on Cingular and 5Mbps on wap.tracfone. I couldn't even get tfdata to work.
If anyone has working MMS settings for this phone please post m
Sent from my HTC One using xda app-developers app
Wing_Zero_Custom said:
Didn't work for me. Data seems okay my main issues are with MMSC MMS proxy and MMS port. I got 6.2Mbps on Cingular and 5Mbps on wap.tracfone. I couldn't even get tfdata to work.
If anyone has working MMS settings for this phone please post m
Sent from my HTC One using xda app-developers app
Click to expand...
Click to collapse
The various forums have been jam packed with issues regarding APN's and AT&T straight talk the last week or two, and I have not come across a straight answer why. I even read where there is a lawsuit going on between AT&T and Straight Talk. For some, the old APN's are needed, for others the new ones are needed, for still others neither set of values work. It seems that a lot of people who's refill card ran out or just renewed had to go with the new APNs.
I lost data too a week ago and straight talk had me re-enter my APN values and data magically came back. Now if I could only get data faster than 1 Mbps that would be nice.
These are the values that straight talk had me enter that fixed my data (I don't have the original ones from 4 months ago so I am not sure there is a difference or not):
Name: Straight Talk
APN: att.mvno
Proxy: not set
Port: not set
Username: not set
Password: not set
Server: not set
MMSC: http://mmsc.cingular.com
MMS Proxy: 66.209.11.33
MMS Port: 80
MCC: 310
MNC: 410
Authentication type: not set
APN type: not set
APN protocol: IPv4
APN roaming protocol: iPv4
Bearer: Unspecified
THESE ARE THE NEW VALUES:
Name: straight talk
APN: tfdata
Proxy: not set
Port: 80
Username: not set
Password: not set
Server: not set
MMSC: http://mms-tf.net
MMS Proxy: mms3.tracfone.com
MMS Port: 80
MCC: 310
MNC: 410
Authentication type: not set
APN type: not set
APN protocol: IPv4
APN roaming protocol: iPv4
Bearer: Unspecified
pjc123 said:
The various forums have been jam packed with issues regarding APN's and AT&T straight talk the last week or two, and I have not come across a straight answer why. I even read where there is a lawsuit going on between AT&T and Straight Talk. For some, the old APN's are needed, for others the new ones are needed, for still others neither set of values work. It seems that a lot of people who's refill card ran out or just renewed had to go with the new APNs.
I lost data too a week ago and straight talk had me re-enter my APN values and data magically came back. Now if I could only get data faster than 1 Mbps that would be nice.
These are the values that straight talk had me enter that fixed my data (I don't have the original ones from 4 months ago so I am not sure there is a difference or not):
Name: Straight Talk
APN: att.mvno
Proxy: not set
Port: not set
Username: not set
Password: not set
Server: not set
MMSC: http://mmsc.cingular.com
MMS Proxy: 66.209.11.33
MMS Port: 80
MCC: 310
MNC: 410
Authentication type: not set
APN type: not set
APN protocol: IPv4
APN roaming protocol: iPv4
Bearer: Unspecified
THESE ARE THE NEW VALUES:
Name: straight talk
APN: tfdata
Proxy: not set
Port: 80
Username: not set
Password: not set
Server: not set
MMSC: http://mms-tf.net
MMS Proxy: mms3.tracfone.com
MMS Port: 80
MCC: 310
MNC: 410
Authentication type: not set
APN type: not set
APN protocol: IPv4
APN roaming protocol: iPv4
Bearer: Unspecified
Click to expand...
Click to collapse
So the old ones are the ones that work for you? Or the new values are the ones that work?
Wing_Zero_Custom said:
So the old ones are the ones that work for you? Or the new values are the ones that work?
Click to expand...
Click to collapse
As I stated in my post, the first set of APN values fixed my data. As I also stated in my post, I don't know if they are the same values as the ones I entered 4 months ago when I first bought my phone, because I no longer have the ones from 4 months ago to compare them two. The new APN values (the second set in my post) did not work at all for me.
pjc123 said:
As I stated in my post, the first set of APN values fixed my data. As I also stated in my post, I don't know if they are the same values as the ones I entered 4 months ago when I first bought my phone, because I no longer have the ones from 4 months ago to compare them two. The new APN values (the second set in my post) did not work at all for me.
Click to expand...
Click to collapse
My data is fine, my MMS is whats not working. Which MMS settings are currently in your phone right now, that is allowing it to work?
mikec628 said:
Is today your renewal date for your service? ST has changed there settings for the APN. You have to change your APN on your renewal date or lose data.
http://www.straighttalksim.com/support.php
FIELD SETTINGS
NAME straight talk
APN tfdata
PORT 80
MMSC http://mms-tf.net
MMS PROXY mms3.tracfone.com
MMS PORT 80
I found this out on the 4th when I lost data and called ST. Needless to say they didnt even tell me about this.
Click to expand...
Click to collapse
My service renewed on the 7th and I have had no problem with Data or MMS so far that I've noticed and I didn't have to change any APN settings... that's really odd...
sparkplugDev said:
My service renewed on the 7th and I have had no problem with Data or MMS so far that I've noticed and I didn't have to change any APN settings... that's really odd...
Click to expand...
Click to collapse
What are your current settings?
Wing_Zero_Custom said:
What are your current settings?
Click to expand...
Click to collapse
Name: StraightTalk ATT
APN: att.mvno
MMSC: http://mmsc.cingular.com
MMS Proxy: 66.209.11.33
MMS Port: 80
MCC: 310
MNC: 410
so almost exactly the same as the OP
Wing_Zero_Custom said:
My data is fine, my MMS is whats not working. Which MMS settings are currently in your phone right now, that is allowing it to work?
Click to expand...
Click to collapse
So, I sent an MMS from my phone to myself with the working APN settings and it worked (Took about 10 minutes because I have a -90 to -100 dbm data signal at my house). Plain SMS texts sent from Google to my phone also work.
I hate to drag this thread back up but I have tried every single MMS setting in this thread and not one has worked. Some of the IPs and URLs listed dont reply to a ping, which makes me believe they arent even up.
Wing_Zero_Custom said:
I hate to drag this thread back up but I have tried every single MMS setting in this thread and not one has worked. Some of the IPs and URLs listed dont reply to a ping, which makes me believe they arent even up.
Click to expand...
Click to collapse
Welcome to the Straight Talk nightmare......
http://www.straighttalkwirelessforum.com/viewforum.php?f=6792
pjc123 said:
So, I sent an MMS from my phone to myself with the working APN settings and it worked (Took about 10 minutes because I have a -90 to -100 dbm data signal at my house). Plain SMS texts sent from Google to my phone also work.
Click to expand...
Click to collapse
I was on the phone with Straight Talk Cust-Service and he said that MMS is not guaranteed for BYOD customers. (Disregard my question if you have an N4) Did you buy your phone from Straight Talk?
Bruce777 said:
I was on the phone with Straight Talk Cust-Service and he said that MMS is not guaranteed for BYOD customers. (Disregard my question if you have an N4) Did you buy your phone from Straight Talk?
Click to expand...
Click to collapse
OK. Disregarded.
pjc123 said:
The various forums have been jam packed with issues regarding APN's and AT&T straight talk the last week or two, and I have not come across a straight answer why. I even read where there is a lawsuit going on between AT&T and Straight Talk. For some, the old APN's are needed, for others the new ones are needed, for still others neither set of values work. It seems that a lot of people who's refill card ran out or just renewed had to go with the new APNs.
I lost data too a week ago and straight talk had me re-enter my APN values and data magically came back. Now if I could only get data faster than 1 Mbps that would be nice.
These are the values that straight talk had me enter that fixed my data (I don't have the original ones from 4 months ago so I am not sure there is a difference or not):
Name: Straight Talk
APN: att.mvno
Proxy: not set
Port: not set
Username: not set
Password: not set
Server: not set
MMSC: http://mmsc.cingular.com
MMS Proxy: 66.209.11.33
MMS Port: 80
MCC: 310
MNC: 410
Authentication type: not set
APN type: not set
APN protocol: IPv4
APN roaming protocol: iPv4
Bearer: Unspecified
THESE ARE THE NEW VALUES:
Name: straight talk
APN: tfdata
Proxy: not set
Port: 80
Username: not set
Password: not set
Server: not set
MMSC: http://mms-tf.net
MMS Proxy: mms3.tracfone.com
MMS Port: 80
MCC: 310
MNC: 410
Authentication type: not set
APN type: not set
APN protocol: IPv4
APN roaming protocol: iPv4
Bearer: Unspecified
Click to expand...
Click to collapse
I have no problem with data, but I cannot receive MMS (I can send just fine). This seems to be a problem for multiple people with multiple phone types at the straight talk forum.
Thought I would post here. Anyone have MMS receive working? I've tried both of the above (the second one is still the Straight Talk recommended one). I lose data with the first one. I've tried a hybrid, as follows, data is fine but still no MMS receive.
APN: tfdata
Proxy: not set
Port: 80
Username: not set
Password: not set
Server: not set
MMSC: http://mmsc.cingular.com
MMS Proxy: 66.209.11.33
MMS Port: 80
MCC: 310
MNC: 410
Authentication type: not set
APN type: not set
APN protocol: IPv4
APN roaming protocol: iPv4
Bearer: Unspecified
If you have an APN with MMS receive working, can you post the settings please? Many thanks. I may start a new thread, since this one was specifically about data...
Edit: I've also tried deleting the port numbers. No dice. And yes I reboot after each change.
tatnai said:
I have no problem with data, but I cannot receive MMS (I can send just fine). This seems to be a problem for multiple people with multiple phone types at the straight talk forum.
Thought I would post here. Anyone have MMS receive working? I've tried both of the above (the second one is still the Straight Talk recommended one). I lose data with the first one. I've tried a hybrid, as follows, data is fine but still no MMS receive.
APN: tfdata
Proxy: not set
Port: 80
Username: not set
Password: not set
Server: not set
MMSC: http://mmsc.cingular.com
MMS Proxy: 66.209.11.33
MMS Port: 80
MCC: 310
MNC: 410
Authentication type: not set
APN type: not set
APN protocol: IPv4
APN roaming protocol: iPv4
Bearer: Unspecified
If you have an APN with MMS receive working, can you post the settings please? Many thanks. I may start a new thread, since this one was specifically about data...
Click to expand...
Click to collapse
This is the same issue I had... Could send but not receive MMS messages, spent 4 hours on the phone with tech support who rebuilt my account twice and couldn't get working, finally to be told they don't guarantee it to work and my phone wasn't compatible with there service. Never did get it working, finally switched to go phone and never had a problem since... That being said, the only thing I didn't try was the SIM swap.
Sent from my Nexus 4 using xda app-developers app
Shouldnt it say APN Type: default,supl,mms
tatnai said:
I have no problem with data, but I cannot receive MMS (I can send just fine). This seems to be a problem for multiple people with multiple phone types at the straight talk forum.
Thought I would post here. Anyone have MMS receive working? I've tried both of the above (the second one is still the Straight Talk recommended one). I lose data with the first one. I've tried a hybrid, as follows, data is fine but still no MMS receive.
APN: tfdata
Proxy: not set
Port: 80
Username: not set
Password: not set
Server: not set
MMSC: http://mmsc.cingular.com
MMS Proxy: 66.209.11.33
MMS Port: 80
MCC: 310
MNC: 410
Authentication type: not set
APN type: not set
APN protocol: IPv4
APN roaming protocol: iPv4
Bearer: Unspecified
If you have an APN with MMS receive working, can you post the settings please? Many thanks. I may start a new thread, since this one was specifically about data...
Edit: I've also tried deleting the port numbers. No dice. And yes I reboot after each change.
Click to expand...
Click to collapse
Geez, you are replying to a post from June, and yes my post was about a change that Straight Talk did that killed data for a lot of people that week. I have never had a problem with MMS with the original sim card with the att.mvno values that I have shown. My new LTE sim card however required that I delete all APN entries, use the tfdata version of the APN as listed on Straight Talks's web site, and I also added APN Type: default,supl,mms, but I am not sure which one of those two things (or multiple things) fixed the problem, but now I have MMS with the new card.
pjc123 said:
Geez, you are replying to a post from June, and yes my post was about a change that Straight Talk did that killed data for a lot of people that week. I have never had a problem with MMS with the original sim card with the att.mvno values that I have shown. My new LTE sim card however required that I delete all APN entries, use the tfdata version of the APN as listed on Straight Talks's web site, and I also added APN Type: default,supl,mms, but I am not sure which one of those two things (or multiple things) fixed the problem, but now I have MMS with the new card.
Click to expand...
Click to collapse
thanks for the reply. I have tried multiple things since posting including a long list from here which does include the APN Type: default,supl,mms with no luck. outgoing MMS fine, incoming no dice. next step is call them to reprovision my sim. I may switch to AIO after this month...
Hey all !
Did a quick search to find Rogers APN settings on the S4 (I-337M) but I think I'm missing a few informations. There's more settings in my phone than what I managed to find on the forums (Which was APN settings on S2 SkyRocket).
Is there something missing or am I *NOT* supposed to touch the other settings (Something about MVNO) ?
It should be fine with what you find in the forums
Sent from my SGH-I337M using xda app-developers app
ShroudOfAgony said:
Hey all !
Did a quick search to find Rogers APN settings on the S4 (I-337M) but I think I'm missing a few informations. There's more settings in my phone than what I managed to find on the forums (Which was APN settings on S2 SkyRocket).
Is there something missing or am I *NOT* supposed to touch the other settings (Something about MVNO) ?
Click to expand...
Click to collapse
Here is how it should be. Leave everything else as is:
Name: Rogers LTE
APN: ltemobile.apn
MMSC: http://mms.gprs.rogers.com
MMS proxy: 10.128.1.69
MMS Port: 80
MCC: 302
MNC: 720
APN type: default,supl,mms
Hi,
ROM: HyperDrive RLS15 (with AT&T Compatibility Pack.zip)
Baseband: MDL
I'm on AT&T, MDL base, HyperDrive ROM, and only issue I had with RLS15 is I had to put in the APN settings to get my 4G
data/internet working (my voice calls and text messaging were already okay and working).
However, now I realized I can't download incoming Multi-Media messages, like pictures via text for example:
this problem was present before I put in APN settings manually. I was wondering if anyone could direct me,
or knows the right APN settings I need for this, if any.
Thanks in advance for the help. :good:
Tried APNs
APN 1 (Up to 3.5G HSDPA/HSUPA only, 7.2mbps):
Name: Cingular
APN: wap.cingular
Proxy: wireless.cingular.com
Port: 80
MMS protocol: WAP 2.0
MCC: 310
MNC: 410
APN type: default,agps,supl,fota,dun
APN 2 (Up to 3.75G HSPA+ only, 21mbps):
Name: AT&T HSPA+
APN: phone
MMS protocol: WAP 2.0
MCC: 310
MNC: 410
APN type: default,agps,supl,dun
APN 3 (LTE, ALL THE mbps):
Name: AT&T LTE
APN: pta
MMS protocol: WAP 2.0
MCC: 310
MNC: 410
APN type: default,agps,supl,hipri,internet
APN 4:
Name: Cingular MMS
APN: wap.cingular
Proxy: wireless.cingular.com
Port: 80
MMSC: http://mmsc.cingular.com
MMS proxy: wireless.cingular.com
MMS port: 80
MMS protocol: WAP 2.0
MCC: 310
MNC: 410
APN type: mms
APN 5:
Name: AT&T LTE MMS
APN: pta
MMSC: http://mmsc.mobile.att.net
MMS proxy: proxy.mobile.att.net
MMS port: 80
MMS protocol: WAP 2.0
MCC: 310
MNC: 410
APN type: hipri,mms
Okay, So this APN works for everything I need.
Name: ATT HSPA+
APN: phone
Proxy: not set
Port: not set
Username: not set
password: not set
Server: not set
MMSC: http://mmsc.mobile.att.net
Multimedia message proxy: proxy.mobile.att.net
Multimedia message port: 80
MCC: 310
MNC: 410
Authentication type: not set
APN type: default,agps,supl,mms,hipri,internet *Note* no space
APN protocol: IPv4
Bearer: Unspecified
Mobile virtual network operator: None
Where do you change this information at?
Sent from my A100 using xda app-developers app
ive been wondering if phone or pta is better. phone is default and gives lte, but older lte phones used pta.
I read that this is common bug on older firmware TW version. Not telling you to update just try some version of KitKat from development section.
ms.journie said:
Where do you change this information at?
Sent from my A100 using xda app-developers app
Click to expand...
Click to collapse
Go to your
settings>more networks...>mobile networks>Acess Point Names "APNs"
Sent from my SAMSUNG-SGH-I337 using xda premium
Thanks, but it cannot be edited. Also, it seems only the entries in APN type differ
d9vabder said:
Go to your
settings>more networks...>mobile networks>Acess Point Names "APNs"
Sent from my SAMSUNG-SGH-I337 using xda premium
Click to expand...
Click to collapse
I cannot edit the entries? How do you edit?
Also, it seems your only difference from mine reset to default are entries in:
yours > APN type: default,agps,supl,mms,hipri,internet *Note* no space
mine/default > APN type: default,mms,supl,hipri,fota
so yours adds agps,
flip flops the order of mms/supl (does order matter)
deletes fota
adds internet
I see on another thread a tip that suggested changing the MMS port from 80 to 8080. He said it works for a while, and when it fails, he changes it back to 80, and so on
NOTE: ( I can't find the page) this is the main page
http://forum.xda-developers.com/showthread.php?t=1791526&page=1
The thread wanders all over the place, so read with caution. This is complicated and frustrating to have to figure out.
About the only thing I saw that I would tend to think is where it all lies is that AT&T and Verizon use different LTE and they have different protocols, and they don't "play nicely together". Since my problems all seem to be between AT&T (me and m5 phones) and Verizon (15 or so other family members from whom we 5 all have issues receiving. They never have issues within Verizon)