Database Info

Vox & MMS settings

I have problem with MMS settings.
MMSC Settings on my Vox
Name: MMS
MMSC URL: http://mmsc.tele2.hr
WAP gateway: 193.012.040.066
Port: 80
Connect via: Internet
Max. sending size: 300K
WAP version: WAP 2.0
When I press "Send/Receive" receive message (left top) "Error synchronising"
Look information on provider site: "PRESS Tele2 pretplatnici" http://www.tele2.hr/hrv/index.asp?p=upute&sp=rucne
"Pretplatnici" is postpaid system...
Help...

its not really showing the Port number.
try 8080.
also did you already configure your GPRS settings?

Elisha said:
its not really showing the Port number.
try 8080.
also did you already configure your GPRS settings?
Click to expand...
Click to collapse
Yes, I have correct GPRS settings and I use that.
Again error (with 8080) :-(

try to setup connection as secure wap and use some user id to log on.... It worked for me in slovak T-Mobile network... I get the same message also using proxy server and user id. Immediatelly I changed this to Secure WAP it strated to work properly... You should give a try.

evo ga
pozdrav,
I see you are using TELE2 network in Croatia. you have automatic settings for MMS in this files.
BlaBla for prepaid, and pretplatnici for postpaid.
it's intended for HTC touch but works also on VOX.
nadam se da ce ti ovo pomoci.

[Q] Nexus S and Softbank (Japan): How to get it working?

Hey guys,
I seriously need your help. I can't receive MMS (S!Mail) with my Nexus S and the japanese carrier Softbank, no matter what I try. Last year the same problem with my old Motorola Milestone.
Android 2.3.5, CM ROM #167 nightly
Baseband: I9023XXKD1
In 2009, I bought a silver USIM Prepaid from Softbank (still valid) with a Softbank 822p phone.
Until now I tried the smile.world and openmms APN, different Apps (Handcent SMS, Go SMS Pro, Softbank Mail), but I can only receive notifications. It shows a download button, but if I hit that, I get the instant error "download not possible. Please try again later". Wifi turned off.
This didn't help as well:
http://ryufly.wordpress.com/2011/07...end-receive-mms-after-upgrading-to-cm7-1-rc1/
If anybody can help, that would be great! Every little hint is appreciated.

does the softbank mail app not work?
found this:
http://www.howardforums.com/showthr...arp-Android-phones-with-Softbank-(Go-SMS-Pro)
Using another SMS/MMS app on Sharp Android phones with Softbank (Go SMS Pro)
First download the following apps:
Go SMS　Pro
Go SMS Emoji Plugin
Under Receive Settings, check the Disable other message notification checkbox. This means SMS will only be received in Go SMS but unfortunately it cannot stop the MMS from being received by the stock app (more on that later)
In MMS Settings:
Check the Fill user agent manually checkbox (under User Agent)
Change the user agent to this:
Vodafone/1.0/V802SE/SEJ002 Browser/VF-NetFront/3.3 Profile/MIDP2.0 Configuration/CLDC-1.1
(Cant make any mistakes, so best to copy/paste)
Under APN　Configuration, select Custom Access Point
MMSC: http://mms
MMS Proxy: sbmmsproxy.softbank.ne.jp
MMS Port: 8080
Under Important Tips, select the checkbox saying Stock messaging app uninstalled
If you dont select this then Go SMS wont download MMS at all. In that case Go SMS can be used for SMS only (i.e. other Softbank only) - MMS would go to the stock Softbank app.
In my case i hated how the Softbank app chews up 100% of the CPU for about 30 seconds as it tries to download an MMS. When you are playing a game it really makes you hate the sender for screwing up your gameplay!
Lastly go into the Softbank mail application
Settings → S!Mail Settings → Receive/Display Settings → Mail receive method → Change to Sender/Subject only. Then under notification settings, turn off the lamp, turn off vibration, change the notification sound to be something quiet like "Facebook Pop"
After all of that, when you get an email you will get a double notification - one from Go SMS and one from Softbank. Thats unavoidable unless you uninstall the Softbank app. But only Go SMS will get the full MMS, and you can keep ignoring the Softbank mail notifications
Seems to be working good for me so far. I love being able to type and reply to messages without the annoying "sending" screen. And being able to see new messages as they appear instead of having to get out of the message being edited, to see the new messages
Click to expand...
Click to collapse
i can confirm it works on my DHD

The key is not only getting the right apns but also getting that user agent string in your mms app.
Cyanogen mod can do it, or go sms pro too if you don't want to run cm.

@SQ3.0dotJP
Not even the Softbank Mail App works, giving me the same error message as other apps. The solution you quoted wont work as well.
Regarding error messages: the only thing I can achieve is that either I get an instant error message (cant download...) or a timout error message (trying to download...after some time: cant download).
I think it's a minor detail, but I cant figure it out.
@patrixl
How to configure the User Agent with CyanogenMod? The only option I know is within message apps like Go SMS Pro and Handcent SMS.

The user agent code is in the line i posted. You tried it in go with no results? Wish i could help. Where are you BTW?
Sent from my HTC Desire HD using XDA App

open.softbank apn
Sent from my HTC Desire HD using XDA App

SQ3.0dotJP said:
The user agent code is in the line i posted. You tried it in go with no results?
Click to expand...
Click to collapse
I tried various User Agents with Go SMS Pro. iPhone, the one in your quote, from my old Softbank 822p .... no results.
SQ3.0dotJP said:
Wish i could help.
Click to expand...
Click to collapse
Your efforts are already appreciated
SQ3.0dotJP said:
Where are you BTW?
Click to expand...
Click to collapse
In lovely Kyoto.

Kyoto is nice, im in Fukuoka city.
Sent from my HTC Desire HD using XDA App

have you tried the android.global apn?

SQ3.0dotJP said:
have you tried the android.global apn?
Click to expand...
Click to collapse
Never heard of it and won't finde informations about it with google. Could you elaborate on it a bit?

Hi guys,
I've spent the entire day trying to get this to work.
Just FYI, I have a Nexus S, rooted, Cyanogen mod 7 and just got a prepaid sim from softbank.
I've followed the instructions given here to the letter. Go SMS Pro is certainly a better app than the Softbank crap.
I can received messages, as in I caan see the title, but when I click them it says "Currently Unable to Download. Please Try Again Later". The same thing happens in the softbank app or another mms.apk I got where you could change the User Agent from a list. I also cannot send any messages, it just sits there with the little circle going around and around.
I've tried both the APNs that came with the Sim (Softbank(open) and Softbank(smile.world)) with no luck at all. I also downloaded the App the guy in the quoted post suggested, but it fails with any APN or web proxy combination.
I've also looked at other APNs online and tried a whole bunch.
I don't understand what setting is wrong. I've literally spent about 8 hours on this now, and I think I may be going a little crazy.
ANY help with this will be rewarded with knowing you have made my year (or at least my month).
Thanks very very much,
N.

SOLVED! Nexus S on Softbank Prepaid!
:clapping:
Hopefully this will help others who troll online trying to get their Android (perhaps a Nexus S) to work with Prepaid Softbank.
For the fix, I did the following. Note, one or two parts MAY be unneccesary, I'll test it all later. A quick note, I initially installed the Softbank Mail app from the Market, but since I'm rooted I just uninstalled it after it was all working and it still works GREAT! So you DON'T NEED to use that app. Just FYI.
Download the following:
Go SMS Pro
Go SMS Emoji (if you like Emoji)
Softbank Mail (Get rid of this if you are rooted)
Follow the instructions as stated by Tokyo_Dom, repeated here:
Go SMS
Under Receive Settings, check the Disable other message notification checkbox. This means SMS will only be received in Go SMS but unfortunately it cannot stop the MMS from being received by the stock app (more on that later)
In MMS Settings:
Check the Fill user agent manually checkbox (under User Agent)
Change the user agent to this:
Vodafone/1.0/V802SE/SEJ002 Browser/VF-NetFront/3.3 Profile/MIDP2.0 Configuration/CLDC-1.1
(Cant make any mistakes, so best to copy/paste)
Under APN　Configuration, select Custom Access Point
MMSC: http://mms
MMS Proxy: sbmmsproxy.softbank.ne.jp
MMS Port: 8080
Under Important Tips, select the checkbox saying Stock messaging app uninstalled
If you dont select this then Go SMS wont download MMS at all. In that case Go SMS can be used for SMS only (i.e. other Softbank only) - MMS would go to the stock Softbank app.
Softbank Mail
Settings → S!Mail Settings → Receive/Display Settings → Mail receive method → Change to Sender/Subject only. Then under notification settings, turn off the lamp, turn off vibration, change the notification sound to be something quiet like "Facebook Pop"
APN Settings
On your Android, go to "Settings > Wireless & Networks > Mobile Networks". Make sure only "Date enabled" is checked, you don't need national or international roaming.
Then click "Access Point Names". Here I deleted EVERYTHING so it wouldn't get confused. I don't want 3G internet, as on Prepaid it is crazy expensive.
Add a new APN with the following details:
Name: Mail Web Service (This can be anything you want)
APN: mailwebservice.softbank.ne.jp
Proxy: sbwapproxy.softbank.ne.jp
Port: 8080
Username:softbank
Password:qceffknarlurqgbl
Server: <Not set>
MMSC: http://mms/ (< This is "http : // mms /" without the spaces if the forum removes urls)
MMS Proxy: sbmmsproxy.softbank.ne.jp
MMS Port:8080
MCC:440
MNC:20
Authentication: PAP
APN type: mms
Save this. Now, at this point you SMail/MMS MIGHT be working. If it is, congrats and please let me know. If it isn't there are a few further steps that should get you there. I've found these on different forums, so appologies if I don't give credit where due. I think I found them here: http://forum.xda-developers.com/showthread.php?p=21545288
PPP File
There MAY be a file on your phone at : / system / etc / ppp / peers / pppd-Ril.options.
There wasn't on mine, but I created one anyway (oh yeah, probably need to be rooted for this). It contains two lines for the Username and password, which you must change to correspond to the same username and password in your APN settings. Otherwise, it never seems to use the right one, and therefore your MMS or data will not work. You'll need to root your phone and figure out how to edit or copy an edited file onto your phone. So, change those two lines to look like this:
user softbank
password qceffknarlurqgbl
Give it a try and see if it all works.
Data On/Off
For some reason, whenever I first turn on the phone, the messaging only receives a header for each message, but refuses to download the actual message body. Even if I click 'download' on the message in the message app, it will not work, and will give me an error.
For the solution, everytime you start up your android, go to "Settings > Wireless & Networks > Mobile Networks". UNCHECK "Date enabled", then reCHECK "Date enabled".
It was specifically after this fix that my messages started to be downloaded. It may have been this alone, but I already did the other bits. I might investigate more later, but I don't want to stop a good thing ATM.
SOME OTHER TIPS AND TRICKS
1) Make sure the APN is set to "mms".
I also found that it would work with the APN type set to blank instead of 'mms' in my APN settings. HOWEVER, with it set to blank, it was CONSTANTLY, I mean non-stop, using my 3G connection (as indicated in the status bar). It was trying to connect to the internet I presume. My Softbank prepaid service includes messaging but not internet service, nor do I have the APN for internet in my settings. But, without specifying my mms APN as 'mms' type, it trys to use that APN for internet as well. Anyway, that drained my battery very quickly! Set it to 'mms' so your 3G radio isn't working overtime to no benefit.
2) Alternate APNS that MIGHT work
APN: mailwebservice.softbank.ne.jp
Proxy: leave blank
Port: leave blank
Username:softbank
Password:qceffknarlurqgbl
Server:leave blank
MMSC:http://mms/
MMS Proxy: sbmmsproxy.softbank.ne.jp
MMS Port:8080
MCC:440
MNC:20
APN type: mms
Name: Open Softbank
APN: mailwebservice.softbank.ne.jp
Proxy:
Port:
username: softbank
Password: qceffknarlurqgbl
Server:
MMSC: sbmmsproxy.softbank.ne.jp
MMS Port: 8080
MCC: 440
MNC: 20
Authentication type: PAP
APN type: mms
The major difference is MMSC and MMSC Proxy. On my phone I leave the „MMS proxy“ field blank, and the proxy address from this article (sbmmsproxy.softbank.ne.jp) into the MMSC field.
apn carrier="SoftBank Internet"
mcc="440"
mnc="20"
apn="andglobal.softbank.ne.jp"
user="andg001softbank"
password="pumbbghkpgyybsxa"
mmsc="http://mms/"
mmsproxy="andmms.softbank.ne.jp"
mmsport="8080"
type="default,mms"
preferred="true"
Name: Softbank(open)
APN: open.softbank.ne.jp
Proxy: <not set>
Port: <not set>
Username: opensoftbank
Password: ebMNuX1FIHg9d3DA
Server: <not set>
MMSC: http://mms/
MMS proxy: mmsopen.softbank.ne.jp
MMS port: 8080
MCC: 440
MNC: 20
Authentication type: <not set>
APN type: default,dun,mms
APN protocol: IPv4
Sorry for MegaPost, just wanted to put this togeather for others to make it easy. It's about 24 hours work to finally get it sorted.

Thanks for clarifying things! I should have no problems now.

hey travisler just wondering - is your Nexus s a cdma version? I've been trying to get prepaid s-mail to work on my samsung captivate and it hasn't really been working. I'm just wondering if it's a hardware issue like whether the captivate just can't connect to softbank's mms network

Hey tanjierong,
My phone is from Korea so is GSM I'm pretty sure.
It is all still working fine, if you can connect to softbank (ie. you can make a call or recieve) then this hack should work for you. It has worked for a few other friends here too now with random android phones.
Hope you get it sorted.

Thanks
Omg travisler... I've been cracking my head since one month in Japan. Using Xperia s and I just can't get the app working. Tried several methods like pushing through mms.apk file using adb still doesn't works. Until I came across your post, works like a charm dude. Thanks a lot. Now I don't have to carry two phones at once :fingers-crossed:

Great bit of info you have provided here travisler.
I have put my Softbank 'dumbphone' (708sc) grey SIM into my Motorola Milestone, Cyanogenmod 7 phone. I want to use it like a 'dumbphone' that can use wifi so I have no need for a 'smartphone' data plan. It works as a telephone and I am in the process of getting 'text messaging' working. I have been reading quite a bit online and there is much information about getting MMS to work.
When one enables data as the APN guide instructs, this will only apply to MMS and not accidentally lead to huge bills for someone without a smart-phone data plan will it?
I followed the 'GO SMS' guide but not the 'APN Settings' guide and I ignored 'Softbank Mail', then rebooted. I get a new MMS sender and title notification in GO MMS Pro but when I try to download the full message I get the warning "please check that the network is available".
So I followed the instructions in the 'APN Settings' guide. There were already a couple of Softbank APNs there, they had a radio button beside them but my new one didn't. After a reboot there was a new icon (3G?) in the notification bar and I could download MMS but the first SB APN was still checked - I suppose the phone was using that SB APN and not the custom one. I removed both the original 2 SB APNs and rebooted and now I am back to receiving the warning "please check that the network is available" when I try to download MMS.
My MMS address is ****@q.vodafone.ne.jp as I already had a Vodafone subscription when Softbank took over and I cannot change the address to ****@softbank.ne.jp, would this require a tweak on the MMS settings I inputted?
Or perhaps my SIM card is the issue. It is not a 'pre-paid' SIM but one from my contracted 'dumb-phone'.
I'd appreciate some help please.

Thank you very much!
This worked for me with the white prepaid SIM.
I did all the steps you listed and used the first APN settings that you recommended, except that I had to set the APN type to "default,mms".
If I only enter "mms", I would sometimes get the 3G icon, but I could not download the messages.

I tried this and still no go. I have a sh203 sharp from softbank. I added the apn but i cannot edit the stock apn since i cannot find a way to root my phone.
When i chose the apn i created i loose my internet data..

Working APN settings for t-mobile g2x on straight talk given sim ??

Please Help.
I want to use an unlocked t-mobile branded lg g2x on the straight talk network
The APN settings supplied by the straight web site do not work for mms or internet,
If you have the APN settings that work for mms and internet please post them with confirmation that they work.
Thank you very much

Did you get any settings to work?
I want to pull the trigger on this, but not sure if it works (had some issues with the Simple Mobile APN settings on my phone).
Let me know.

Yes ! Please post these settings! I have had my g2x for about a month now with no sms/data at all! It is very frustrating I have tried many apns and cannot find one that works.. .

I got my g2x to work with straightalk last night but only phone and text. No data. Used my sim from my nokia e71. Type in att.mvno in the apn config screen. Trying to come up with the next step to get data.

Working settings for Lg G2x straighttalk
Name: whatever_you_want_the_name_to_be
APN: att.mvno
Username:
Password:
MMSC: http://mmsc.cingular.com
MMS Proxy: proxy.mvno.tracfone.com
MMS port: 80
MCC: 310
MNC: 410
EDIT: not sure what MCC and MNC stand for, or what the settings should be, but try leaving the 310, 410 settings in place, if it doesnt work, try leaving them blank.
Here are my settings:
Name
HOME
APN
att.mvno
Leave everything else alone EXCEPT the bottom selection that says:
APN type (here you must enter the following)
default,supl
Then save, next choose to add another APN
make it look like this:
Name
MMS
APN
att.mvno
skip down to
MMSC
http://mmsc.cingular.com
MMS proxy
proxy.mvno.tracfone.com
MMS port
80
skip to:
APN type (enter the following)
mms
THEN SAVE
You will see that only one APN has the option to be chosen, that is ok, Just choose the one that is able to be chosen.
Now go back to Homescreen and then reboot your phone.
This works for me, hope it can help you. I tried a hundred different ways and this was it. Capitalization is important, and the APN type was the trick.
GOOD LUCK and let me know if it worked for you.

them settings did not work for me. is there any other settings i can use?

working APN
If you are on stock rom then the normal straight talk settings work. Although you will have to download APN manager from the market to delete the T-Mobile apn or else your system will automatically switch to it occasionally which will drop data.
If you are on a custom rom (MIUI, ICS, etc.):
1. Open apn settings
2. Open the T-Mobile apn
DO NOT ERASE OR CHANGE ANYTHING OTHER THAN THE FOLLOWING
3. Change APN to wap.tracfone
4. Change Port to 8080
5. Change MMSC to http://mms.tracfone.com
6. Erase anything typed in the "APN type" field
7. Save
8. Delete any other APNs.
If you already deleted the T-Mobile apn on a custom rom you'll have to reinstall the rom or ask the developer what the apn settings were.
This has always worked for me. Hope it helps.

^^^^ That is the correct solution.

Thank you c1c2doc that worked perfectly!

The latest CM 7.2 has the StraightTalk APN information pre-populated as an option along with Simple. You can also get the T-Mobile SIM card from StraightTalk as well now so you don't have to unlock the phone. Has anyone tried these yet?
Sent from my SGH-T889 using xda app-developers app

This helped so much on my T-Mobile G1

c1c2doc YOU ARE A GENIUS!!!
How did you figure this out???
c1c2doc said:
If you are on stock rom then the normal straight talk settings work. Although you will have to download APN manager from the market to delete the T-Mobile apn or else your system will automatically switch to it occasionally which will drop data.
If you are on a custom rom (MIUI, ICS, etc.):
1. Open apn settings
2. Open the T-Mobile apn
DO NOT ERASE OR CHANGE ANYTHING OTHER THAN THE FOLLOWING
3. Change APN to wap.tracfone
4. Change Port to 8080
5. Change MMSC to
6. Erase anything typed in the "APN type" field
7. Save
8. Delete any other APNs.
If you already deleted the T-Mobile apn on a custom rom you'll have to reinstall the rom or ask the developer what the apn settings were.
This has always worked for me. Hope it helps.
Click to expand...
Click to collapse

I just got my Straighttalk T-mobile SIM up and running. I did not have to unlock my T-mobile GS2, plug-n-play. Took about a day to port my number over, entered the APN settings on the website. Getting data speeds the same as T-mobile, MMS worked the first time. So far, no complaints. I read on another forum that autopay eliminates fees and taxes. We will see.

Att mms still not working.. Help!

AT&T mms still not working.. Help!
I just came over to this phone from a galaxy s5. I do have a LTE sim and popped it in and all works but I cannot send or receive mms. Here are my access point settings
Name
ATT lte
Apn
Pta
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
Not set
Apn type
Default,mms,supl,hipri
Apn protocol
Ipv4
Apn roaming protocol
Ipv4
Apn enabled
Bearer
Unspecified
Mvno type
None
Now as far as I know those settings are correct. Anyone have any ideas?
Sent from my A0001 using Tapatalk

reno55 said:
AT&T mms still not working.. Help!
I just came over to this phone from a galaxy s5. I do have a LTE sim and popped it in and all works but I cannot send or receive mms. Here are my access point settings
Name
ATT lte
Apn
Pta
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
Not set
Apn type
Default,mms,supl,hipri
Apn protocol
Ipv4
Apn roaming protocol
Ipv4
Apn enabled
Bearer
Unspecified
Mvno type
None
Now as far as I know those settings are correct. Anyone have any ideas?
Sent from my A0001 using Tapatalk
Click to expand...
Click to collapse
Add "admin" to APN type.
Are you using any Adblocking App ? If yes, change MMS Port to 8080

reno55 said:
AT&T mms still not working.. Help!
I just came over to this phone from a galaxy s5. I do have a LTE sim and popped it in and all works but I cannot send or receive mms. Here are my access point settings
Name
ATT lte
Apn
Pta
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
Not set
Apn type
Default,mms,supl,hipri
Apn protocol
Ipv4
Apn roaming protocol
Ipv4
Apn enabled
Bearer
Unspecified
Mvno type
None
Now as far as I know those settings are correct. Anyone have any ideas?
Sent from my A0001 using Tapatalk
Click to expand...
Click to collapse
kash_si said:
Add "admin" to APN type.
Are you using any Adblocking App ? If yes, change MMS Port to 8080
Click to expand...
Click to collapse
Anyone that is still experiencing the issue please follow this link and vote this subject up.
https://jira.cyanogenmod.org/browse/BACON-3371
This is the bug log for Cyanogen and they just escalated the issue to critical.

ATT Intruder said:
Anyone that is still experiencing the issue please follow this link and vote this subject up.
https://jira.cyanogenmod.org/browse/BACON-3371
This is the bug log for Cyanogen and they just escalated the issue to critical.
Click to expand...
Click to collapse
@ATT Intruder,
1) verify that you have the correct SIM card according to your data plan e.g. LTE SIM. Link provided here is for AT&T.
2) Register your OPO's IMEI number in your local carrier's system by visiting the local store & verify the status bar shows e.g. LTE next to the data connection.
I hope this helps.

kash_si said:
@ATT Intruder,
1) verify that you have the correct SIM card according to your data plan e.g. LTE SIM. Link provided here is for AT&T.
2) Register your OPO's IMEI number in your local carrier's system by visiting the local store & verify the status bar shows e.g. LTE next to the data connection.
I hope this helps.
Click to expand...
Click to collapse
Appreciate your feedback. None of that is the issue, if you click on the link you'll see what many of us are dealing with. It's a known bug.
Thanks again, I do appreciate it.
Sent from my A0001 using XDA Free mobile app

Fix for MMS issues on Pixel 2 on T-Mobile while connected to certain Wi-Fi networks

This was also posted as a reply on the Pixel 2 XL Q&A forum here and I figured other T-Mobile Pixel 2 users would find this useful since this fix works on both the Pixel 2 and Pixel 2 XL.
Situation
My wife was unable to send MMSs on T-Mobile with her Pixel 2. Finally realized it had to do when connected to Wi-Fi, but only when connected to the EAP Wi-Fi at work. Since we work for the same company, I tested with my Pixel 2 XL and it is happening to me too. It works fine at home on our Wi-Fi and on the mobile network, but not when we are on our work's Wi-Fi. I can disable Wi-Fi at work and the MMS sends. Both phones have the same dysfunction. I normally use Google Voice and I never receive MMSs directly to my phone and had not noticed the issue up to this point.
I did a test where I added my Google Voice number and my wife's number in a group message with my phone's number and tested connecting on Wi-Fi, mobile network, and work Wi-Fi and every time we are on the work's Wi-Fi, MMSs fail to send or receive. I know it is happening to only Pixel 2s and no one else because my wife's previous phone, a T-Mobile Galaxy S7, worked fine on any network to send/receive MMSs. I have reset network settings and APN settings back to default, no change. From what research on the issue I could find, people were changing APN settings. Looking at the APN settings, I realized the two T-Mobile MMS listings have the APN listed as "TMUS," whereas the default APN is listed as "fast.t-mobile.com." Since "TMUS" is not a valid domain name, I changed the first T-Mobile MMS APN to fast.t-mobile.com and MMS started working on the work's Wi-Fi. I reset my APN settings back to default and it stopped working on my work's Wi-Fi again (as expected). I thought that I should leave the default APNs alone, just in case, and decided to create a third T-Mobile MMS APN with fast.t-mobile.com as the APN. This third T-Mobile MMS APN somehow allows MMSs to work on the company's Wi-Fi.
Fix
This fix seems to be the least amount of work and is very easily undone.
Go to Settings > Network & Internet > Mobile network > Access Point Names.
Tap on the 3 dot menu at the upper-right and select "Reset to default."
Create a new APN with the following settings:
Name: T-Mobile MMS
APN: fast.t-mobile.com
Proxy, Port, Username, Password, and Server: Not Set
MMSC: http://mms.msg.eng.t-mobile.com/mms/wapenc (When typing this in, make sure auto correct doesn't change anything since URLs are case sensitive!)
MMS Proxy and MMS Port: Not Set
MCC: 310 (Should already be set)
MNC: 260 (Should already be set)
APN Type: mms
APN Protocol: IPv6
APN Roaming Protocol: IPv4
Bearer: Unspecified
MVNO Type: None
MVNO Value: Not Set
Tap on the 3 dot menu and select "Save."
Reboot your phone for good measure (may not be necessary) and open Android Messages.
Send a MMS or group MMS on and off the Wi-Fi network you are having issues on to see if it sends. If you have several queued up messages that haven't sent, you may need to tap to resend them and they may become out of order on the recipient's end.
If you ever wanted to undo these changes, you can either reset the APN settings or remove the fast.t-mobile.com one.
Conclusions
The main thing to note about this is that it is the same as the other T-Mobile MMS APNs, but has TMUS replaced with fast.t-mobile.com. If you look at the actual default fast.t-mobile.com APN, you'll notice that "mms" isn't listed among the others in APN Type. I feel, if I could edit that default fast.t-mobile.com APN, the problem would be fixed by adding ",mms" at the end. I assume one could duplicate everything in the default one and add it that way, but I wanted to provide the simplest, non-invasive fix possible that would not result in any future or unforeseen problems. When the phone/Google Messages/text message app consults the APNs while on an enterprise Wi-Fi connection, I assume it goes through each one to attempt to find one with MMS in the APN type and then attempts to contact the APN via its domain name, but fails since TMUS is not valid. I am not sure why it doesn't go ahead, verifies a working data connection, and then sends the MMS using http://mms.msg.eng.t-mobile.com/mms/wapenc as it seems to do fine on other Wi-Fi networks. The phones are like, "Whelp, I'm on an enterprise Wi-Fi connection and I need me an MMS APN with a FQDN or I aint workin'!" I do not know what makes my company's Wi-Fi so different from my home Wi-Fi aside from it using EAP authentication. This wasn't a problem on my wife's previous phone (T-Mo Galaxy S7). I had the 2016 Pixel for a while, but I use Google Voice and would not normally notice the MMS issues.
If anyone has a good theory as to wth is going on, please contribute! I think its some sort of wonky Oreo issue. I hope this helps anyone who was as frustrated as I was!

Every family group text used to be a nightmare. This solved all my MMS maladies. Thank you for the nice writeup!