Develop Bugs

[Q] Unable to send or receive MMS - Cyanogen 6.1.1

This was happening with previous stable releases of Cyanogen for the Slide as well, I just never really had any need to use MMS before so never bothered to look for assistance.
I swapped my sim card into a Nokia Nuron to ensure it is not a network issue (everything was fine on the Nuron). Whenever I try to send a MMS it just sticks at "Sending..." when I receive one and press the download button it gets stuck at "Downloading...". I've tried sending messages to my own number as well as others. Same for receiving, multiple people have tried sending messages from different carriers all with that same result.
I've tried changing the default APN (epc. tmobile .com) to wap. voicestream. com as well as providing the MMS proxy settings that some devices seem to need (216.155.165.50:8080) and still have the same results.
Any assistance in this matter would be very much appreciated as I've got several MMS messages waiting on the network that I would very much like to be able to retrieve.
Thanks in advance!
Here are my current APN settings:
Name: T-Mobile US
APN: epc.tmobile.com
Proxy: <Not Set>
Port: <Not Set>
Username: none
Password: <Not Set>
Server: *
MMSC: ht tp: / /mms.msg.eng.t-mobile. com/mms/wapenc
MMS proxy: 216.155.165.50
MMS port: 8080
MCC: 310
MNC: 260
Authentication type: <Not Set>
APN type: default,supl

Here's an update.. I'm now able to retrieve the MMS messages that were sent to me after adding an additional APN to the device.
I added an APN with the name "T-Mobile MMS"
APN: epc.tmobile.com
MMSC: mms.msg.eng.t-mobile.com/mms/wapenc
However I still cannot send any MMS messages, does anyone have any ideas or suggestions now?

Scratch that, it allowed the pending messages to be downloaded from the network but new messages still will not download.... Issue remains and I have no idea why a few of them finally came through.

Try changing the wap.voicestream APN to default/not set.
Sent from my T-Mobile myTouch 3G Slide using Tapatalk

DonJuan692006 said:
Try changing the wap.voicestream APN to default/not set.
Sent from my T-Mobile myTouch 3G Slide using Tapatalk
Click to expand...
Click to collapse
Could you please be a bit more specific as to what you are suggesting? I do not have a wap.voicestream.com APN set on this device. Are you suggesting I leave the APN blank for the "T-Mobile US" APN? Note that I've since removed the "T-Mobile MMS" APN as it was no longer working (and not even selected for that matter).

You said you changed the default T-Mobile APN to wap.voicestream.com. I was saying leave all the MMS settings in that APN to not set. Here are my current and working APN settings:
Name: data (this can be whatever)
APN: wap.voicestream.com
Proxy: Not set
Port: Not set
Username: Not set
Password: Not set
Server: Not set
MMSC: Not set
MMS Proxy: Not set
MMS Port: Not set
MCC: 310
MNC: 260
Authentication Type: Not set
APN Type: Not set

Just tried your settings and unfortunately the issue still persists. I tried both wap.voicestream.com as well as epc.tmobile.com for the APN with everything else not set (minus the MCC & MNC), same results.
I appreciate you taking the time to respond, would you happen to have any other suggestions? For now I have reverted my APN settings back to default for CyanogenMod 6.1.1.

The other thought would be that something got hosed during the ROM flash or it has something to do with your T-Mobile account. Try flashing the ROM again without doing a wipe and see if it fixes it (doubt it though) if not then call T-Mobile and see if they can look into it on their end.
Sent from my T-Mobile myTouch 3G Slide using Tapatalk

I too doubt that re-flashing will work but I'll give it a shot anyway. As for as contacting T-Mobile, they will just have me swap my SIM and test in another device which works fine, then they'll have my master reset the Slide and test again (I used to work as a tech care rep there so I know the procedures pretty well). I'll post back my results from re-flashing.

Went ahead and reflashed the 6.1.1 ROM that I've been using and I still have the problem. I am tempted to try out the RC of version 7 but it has problems with WiFi which I use all the time.
Does anyone else have any ideas as to what could be wrong?

I'm running RC2 and don't experience the wifi issues some people are reporting. I do have issues with tower data from time to time, but it only seems to be with the tower feeding the area where I work.

Im having the same problem. Yesterday i was able to txt without problem. Today after going to sleep i tried to txt and it didnt work. I figured it was the 6.1.1 so im going back to wipe and restore to old version. I will post my results.

So i tried to go back to a previous version thinking it was 6.1.1 but it wasent. i think its the phone itself or its tmoblies fault. Im going to the store to ask them.

Another update: Picked up my phone about an hour ago and about 10 MMS messages came rushing through to me. Even messages that have been pending to be sent to myself were successfully sent as well as received.
All of this without me changing a thing on my device (CyanogenMod 6.1.1 default APN settings).
As of right now my issue appears to be resolved... I find it hard to believe that the towers in my area would be the problem though since whenever I would swap my SIM card it would work 100% of the time on other devices.
Not going to complain that it's working, I just wish I knew WHY it's working now all of a sudden.

Have you tried sending another MMS to yourself to make sure its "fixed" and you didn't just randomly get that batch of messages.
Sent from my T-Mobile myTouch 3G Slide using Tapatalk

It did in fact stop working again.
I had tested it several times since those messages had come through and it had continued to work, but once again I am stuck at sending...
I'm getting pretty frustrated at this issue now. It appears to me that the device must be configured correctly if it was working an hour ago. I dread the throught of contacting T-Mobile because I know they'll have to escalate this type of issue to ATSG (Advanced Technical Support Group) which can take quite a long time.
I have to do some traveling tomorrow so I'll do some testing in other areas to see if this issue is limited to the tower near my house.
EDIT:
When it was working earlier I had WiFi enabled. When I attempted to send a MMS the E/3G/H data indicator would pop up while the message was being sent or received, however I am no longer seeing this (it's only showing a WiFi connection, E/3G/H no longer pops up like it was earlier). This leads me to believe that the device isn't even attempting to make the correct data connection in order to send the MMS anymore.
EDIT AGAIN:
I just toggled my WiFi off and on again and tried to re-send the message, it worked this time. Still no clue as to why it's working sometimes but not all the time.

I tried sending a text to me and it failed. I rolled back to previous settings and still nothing. It might work 2moro. But if not im going to tmobile about this.

good very good, i don't care

immortalxgod said:
I tried sending a text to me and it failed. I rolled back to previous settings and still nothing. It might work 2moro. But if not im going to tmobile about this.
Click to expand...
Click to collapse
I wish I could help you with your text messaging problem but I would suggest you create a new forum thread as this one is focused on MMS which is completely different than SMS.
As for my MMS issue, I am still able to MMS myself without any issues.
Thank you DonJuan for your assistance!

immortalxgod said:
I tried sending a text to me and it failed. I rolled back to previous settings and still nothing. It might work 2moro. But if not im going to tmobile about this.
Click to expand...
Click to collapse
You are not the only one. I am using ArayrayMod and I am getting problems sending and receiving MMS. Texts work fine. Its really hit or miss right now.
I contacted Tmo and they said it was a known issue and its all over the network - No ETA at this time. I even had a manager verify that issue with me as I don't trust them fully at the Tier 1 techs.

GNEX and straight talk MMS issues

Been working on this issue on and off for a couple days and thought it was time to ask the pros. I can send/rec sms messages with no problems. But if someone sends me a mms it has the download button but the picture will not download. I have double checked my APN settings and they match what Straight Talk says to use. This in an unlocked GNEX from the play store with the AT&T/Unlocked sim card they send out.
Thanks

this happens to me quite often but usually only on wifi or if the person decides to send like 5 pics at once, otherwise it will download the attachment just fine.

In the apn listing under MMSC, there is a line starting http://. Make sure the line starting with http:// has all the correct info. If not correct info press menu to see option to save changes.

My settings say http://mmsc.cingular.com

/b/laZ1n said:
My settings say http://mmsc.cingular.com
Click to expand...
Click to collapse
make sure the proxy line starts with proxy, also try erasing the cingular apn setting the phone comes with.

My Unlocked Play Store Galaxy Nexus is doing the same thing on Straight Talk. Tried messing with putting the proxy back in and also turning off Wifi. Still the same issue as OP.

My first day with Straight talk and I'm having the same issue with MMS. All settings are right but I can't send out MMS

Hey guys. Make sure this is all correct too. I was getting very disappointed with Straight Talk about this. Somehow this got erased or reset having never entered that menu.
http://forum.xda-developers.com/showthread.php?t=1635040
P.S. I use Google Voice now but I still receive MMS from straight talk regarding my bill. I got sick of entering all of the APN. Now I only include
Straight Talk
att.mvno
Thats it. Works like a charm. Have never had any issue. I've only been distributing my Google Voice number for about 2 years having frequently shopping carriers. But like I said I still receive MMS from Straight Talk.

MMS not working

MMS not working on any rom I flash!
Edit: I was pulling all types of tricks out of my sleeve trying to figure out what the issue was, called tech support and they said they were having some tower issues in my area.:banghead: I was like why didn't I call them 1st? Anyways its back up again. What a waist of 5hrs.
GS3 WhiteHot

Have you checked to be sure that your apn settings are in there?
Sent from my SGH-I747M using xda app-developers app

Yes there in there.
GS3 WhiteHot

Same thing happened to me. MMS was working last night, suddently today they aren't. Flashed 2 different roms and restored back to stock, still not working. Tried toggling APN settings, no luck. Tried uninstalling Handcent and using stock messenger, no go. I spent 1 hour with AT&T support online checking my IMEI information, SIM card, etc.
They told me I'm not the only one to have this problem, so I'm wondering if this is a network-related issue.

dmm5157 said:
Same thing happened to me. MMS was working last night, suddently today they aren't. Flashed 2 different roms and restored back to stock, still not working. Tried toggling APN settings, no luck. Tried uninstalling Handcent and using stock messenger, no go. I spent 1 hour with AT&T support online checking my IMEI information, SIM card, etc.
They told me I'm not the only one to have this problem, so I'm wondering if this is a network-related issue.
Click to expand...
Click to collapse
Same thing is happening to me today. Does anyone with working MMS care to share their current APN info?
Mine:
AT&T PTA
APN: PTA
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
APR ptotocol: IPv4

Check to make sure you haven't forzen your MMS app with Titanium Backup.

dmm5157 said:
Same thing happened to me. MMS was working last night, suddently today they aren't. Flashed 2 different roms and restored back to stock, still not working. Tried toggling APN settings, no luck. Tried uninstalling Handcent and using stock messenger, no go. I spent 1 hour with AT&T support online checking my IMEI information, SIM card, etc.
They told me I'm not the only one to have this problem, so I'm wondering if this is a network-related issue.
Click to expand...
Click to collapse
nest75068 said:
Check to make sure you haven't forzen your MMS app with Titanium Backup.
Click to expand...
Click to collapse
Nope. Even using the stock MMS app it still won't send or receive MMS. SMS sends fine. Data is fine. MMS is broken.
I've tried 5 different nandriods: DietICS, AOKP, CM10, Blazer, Stock and they all have the same results.
Can someone with working MMS provide their APN so I can try to change that back?

gaveup said:
Same thing is happening to me today. Does anyone with working MMS care to share their current APN info?
Mine:
AT&T PTA
APN: PTA
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
APR ptotocol: IPv4
Click to expand...
Click to collapse
gaveup said:
Can someone with working MMS provide their APN so I can try to change that back?
Click to expand...
Click to collapse
see gaveup info, that is what my MMS APN info shows too

Oddly enough, everything JUST started to work again for me.
No reboot, nothing. Just sent MMS without issues.
WTF.

Ok, had my wife who has an iPhone test mine out.
She took an existing pic and sent it with words in the text field as well, I didn't get it.
She took a new photo, no words I got it.
She sent an existing pic w/ no words and I got it.
Tried again with words and nothing.

Having the same issue also today.

Mine just came back. Wish I had backed up all my messages before screwing around with restoring backups and reflashing ROMs.

dmm5157 said:
Mine just came back. Wish I had backed up all my messages before screwing around with restoring backups and reflashing ROMs.
Click to expand...
Click to collapse
Yep I was pulling all types of tricks out of my sleeve trying to figure out what the issue was, called tech support and they said they were having some tower issues in my area.:banghead: I was like why didn't I call them 1st? Anyways its back up again. What a waist of 5hrs.
White Hot! GS3.

Straight Talk Galaxy S3 4.3 / 4.4.2 APN settings?

So I have a Galaxy S3, non-rooted, on Straight Talk. Before I updated to 4.3 LTE, SMS and MMS all worked fine. But now that I have updated I can't get MMS to work. I can send them but not receive them. Can anyone on with a S3 that has 4.3 on ST get or receive MMS? If so do you mind helping me out please.
Code:
Doesn't get MMS
Name: STRAIGHT TALK
APN: tfdata
Proxy: proxy.mvno.tracfone.com
Port: 80
Username: <Blank>
Password: <Blank>
Server: <Blank>
MMSC: http://mms-tf.net
MMS proxy: mms3.tracfone.com
MMS port: 80
MCC: 310
MNC: 410
Authentication type: None
APN type: default,supl,mms
APN Protocol: <Grayed Out>
APN roaming protocol: <Grayed Out>
Turn APN on/off: <Grayed Out>
Bearer: Unspecified
Mobile virtual network operator..: None
Mobile virtual network operator..: <Grayed Out>

sending mms
Robert417919 said:
So I have a Galaxy S3, non-rooted, on Straight Talk. Before I updated to 4.3 LTE, SMS and MMS all worked fine. But now that I have updated I can't get MMS to work. I can send them but not receive them. Can anyone on with a S3 that has 4.3 on ST get or receive MMS? If so do you mind helping me out please.
Code:
Doesn't get MMS
Name: STRAIGHT TALK
APN: tfdata
Proxy: proxy.mvno.tracfone.com
Port: 80
Username: <Blank>
Password: <Blank>
Server: <Blank>
MMSC: http://mms-tf.net
MMS proxy: mms3.tracfone.com
MMS port: 80
MCC: 310
MNC: 410
Authentication type: None
APN type: default,supl,mms
APN Protocol: <Grayed Out>
APN roaming protocol: <Grayed Out>
Turn APN on/off: <Grayed Out>
Bearer: Unspecified
Mobile virtual network operator..: None
Mobile virtual network operator..: <Grayed Out>
Click to expand...
Click to collapse
Not sure if this will help but be sure your mobile data is on. I on on at&t and mostly have to have the data on to send MMS. Some of the customs Roms like wicked sensation has a zip file to allow sending MMS via WiFi..

Yea I leave mobile date connected even when on WiFi... Looks like flashing a ROM might do the trick since the issue seems to be related to the stock OTA update.
Walknmemfs said:
Not sure if this will help but be sure your mobile data is on. I on on at&t and mostly have to have the data on to send MMS. Some of the customs Roms like wicked sensation has a zip file to allow sending MMS via WiFi..
Click to expand...
Click to collapse

custom rom
Robert417919 said:
Yea I leave mobile date connected even when on WiFi... Looks like flashing a ROM might do the trick since the issue seems to be related to the stock OTA update.
Click to expand...
Click to collapse
yeah I love it when the updates have added features at no extra cost that you cannot get rid of. also, check into the PAC man rom. it is 4.3 based and is very stable. its a hybrid of Paranoid, AOKP, and CM. tons of options and excellent battery life, I get avg 18hrs no problems. I have issues with most of the 4.4 roms, seems like somewhere something sucks the battery dead. but still a WIP.

Is there anyway to maybe just get this feature.. like from an Xposed mod or something? And my problem is receiving not sending. I can send them just fine.
Walknmemfs said:
N"Zip file to allow sending MMS via WiFi..
Click to expand...
Click to collapse

hey rob, im dealing with the exact same issue as you on my sisters S3, on straight talk also, i can send, but when i send her a MMS, it asks her to download it and then says download failed, im on wicked sensations, so hopefully i can get this straightened out

Having the same issue on A S3 here also. Any news on this?

I saw on another forum that once the plan expired and you renewed it the problem fixed its self.. and it DID!!! My plan refilled on the 12th. It took a few days but about noon today my phone said insert SIM. Puzzled I just powered off, took the batter and SIM out and reversed and powered back on. Thinking of what that person said I sent myself a MMS .. and it worked! Had my girlfriend send my a picture too and it work. I also sent her one. So yea.. MMS seems to fix its self when you refill you plan after it expires. Hope this helps and works for others!
kb9klc said:
Having the same issue on A S3 here also. Any news on this?
Click to expand...
Click to collapse

Robert417919 said:
I saw on another forum that once the plan expired and you renewed it the problem fixed its self.. and it DID!!! My plan refilled on the 12th. It took a few days but about noon today my phone said insert SIM. Puzzled I just powered off, took the batter and SIM out and reversed and powered back on. Thinking of what that person said I sent myself a MMS .. and it worked! Had my girlfriend send my a picture too and it work. I also sent her one. So yea.. MMS seems to fix its self when you refill you plan after it expires. Hope this helps and works for others!
Click to expand...
Click to collapse
Ok, thanks. She renews at the end of the month so we'll see what happens.

Had exact same issue on my wife's s3 after updating to 4.3.... allot of bugs and junk came with that update... Fixed it by first while on screen where you can enter newapn I clicked menu and reset to default. Than I took sim out and put into another phone and sent picture message to it on another phone. Than inserted back into her s3 and it started working. Maybe you don't even need another phone. .. Just try to reset apn to default and turn off than turn on without sim than turn off and put sim card in and enter the apn settings than save and try again. Hope this helps.

Try to change the MMS proxy: from, mms3.tracfone.com to, mms2.tracfone.com
I'm on net 10 (same stuff different flavor) that fixed my issues with MMS messages.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

Where's his ok their post?
Robert417919;49 pity r my plan to expire 96754 said:
I saw on another forum that once the plan expired and you renewed it the problem fixed itwe irk loo ngs self.. and it DID!!! My plan refilled on the 12th. It took a few days but about noon today my phone said insert SIM. Puzzled I just powered off, took the batter and SIM out and reversed and powered back on. Thinking of what that person said I sent myself a MMS .. and it worked! Had my girlfriend send my a picture too and it work. I also sent her one. So yea.. MMS seems to fix its self when you refill you plan after it expires. Hope this helps and works for others!
Click to expand...
Click to collapse
HI. Where was this poi their post about it fixing . Out... I have an S3 on Straight talk. I UPdated and mms stoped
...should I just wait for my plan to expire or can I buy a card sooner

Im dealing with same issues, But i buy the yearly striaght talk plan. so if i have to wait a year good lord.

CUKIO34 said:
Im dealing with same issues, But i buy the yearly straight talk plan. so if i have to wait a year good lord.
Click to expand...
Click to collapse
This. I'm on a 90 day plan. Doesn't expire until April 27. So, is there some way to get Straight Talk to, in effect, do whatever it is that's done when an account is refilled, while still maintaining the time I have left? It seems to me that if so many different people are reporting this as the only solution (and multiple searches reflect this to be the only thing that works), if there were some way to get Straight Talk to do it manually, that'd be a great fix.

Delete the proxy leave the MMS proxy
Sent from my SGH-I747 using xda app-developers app

Follow Up
motor agencde
Hello! I just put an AT&T phone on Straight Talk. It worked great for one day, then 4.3 muffed it all up. I have the same APN as you listed, and nothing is fixing my problem of not getting SMS Pictures / multimedia.
I was just wanting to follow up and see if you ever found a solution to your problem?
Thanks!!

cjtownsend said:
motor agencde
Hello! I just put an AT&T phone on Straight Talk. It worked great for one day, then 4.3 muffed it all up. I have the same APN as you listed, and nothing is fixing my problem of not getting SMS Pictures / multimedia.
I was just wanting to follow up and see if you ever found a solution to your problem?
Thanks!!
Click to expand...
Click to collapse
My girlfriend is on straight talk and has no issues. Here is the APN she uses:
APN:tfdata
MMSC:http://mms-tf.net
PROXY:mms3.tracfone.com
PORT:80
MCC:310
MNC:410
APN TYPE:default,supl,mms,admin,fota,hipri (no spaces after commas)
everything else is blank. If this doesn't work try changing the proxy to 66.209.11.3

Manually putting in the information works but straight talk has a data apn app on the play store and it will walk you through the steps, for me when I got to the bearer I just clicked LE and I am on LTE right now with straight talk.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

Has anyone updated to 4.4.2. I was thinking of doing it but I didn't want to end up with the same problem.

Walknmemfs said:
yeah I love it when the updates have added features at no extra cost that you cannot get rid of. also, check into the PAC man rom. it is 4.3 based and is very stable. its a hybrid of Paranoid, AOKP, and CM. tons of options and excellent battery life, I get avg 18hrs no problems. I have issues with most of the 4.4 roms, seems like somewhere something sucks the battery dead. but still a WIP.
Click to expand...
Click to collapse
I just installed Cyanogenmod by HELLFIRE on my Straight Talk SCH-S968C Galaxy S3, but the rom is for the Verizon version of S3 the I535. I can make calls and send text but cannot use data. What can I do?:crying: Someone told me to go into Build.Prop and edit it but I dont know what lines to change or anything. Could use some help, love this rom and want to use it. Any ideas, thanx:fingers-crossed:

MMS issues on T-Mobile

Is anyone else having issues with MMS not sending or receiving on T-Mobile? I noticed that the APN isn't editable on this phone.
If I switch to airplane mode and back, it will send or receive the stalled message, but will stop working after that.
Any ideas?

El Daddy said:
Is anyone else having issues with MMS not sending or receiving on T-Mobile? I noticed that the APN isn't editable on this phone.
If I switch to airplane mode and back, it will send or receive the stalled message, but will stop working after that.
Any ideas?
Click to expand...
Click to collapse
No issues here wifi on or wifi off.
Sent from my Pixel 2 XL using Tapatalk

Yes I have issues sometimes while on wifi. I don't use wifi calling

Which text app are you using? Maybe a different one would work.

El Daddy said:
I noticed that the APN isn't editable on this phone.
Any ideas?
Click to expand...
Click to collapse
Make up an APN name with just the name and apn filled in with something random. Save that APN. Next go back and edit that APN with the one you need and select it. That's how I fixed my APN.

edd247 said:
Yes I have issues sometimes while on wifi. I don't use wifi calling
Click to expand...
Click to collapse
Issues for me on wifi as well
EMcTx said:
Which text app are you using? Maybe a different one would work.
Click to expand...
Click to collapse
I'm using the stock app
jjoh243 said:
Make up an APN name with just the name and apn filled in with something random. Save that APN. Next go back and edit that APN with the one you need and select it. That's how I fixed my APN.
Click to expand...
Click to collapse
Thanks I'll give that a try.
It's odd because it was fine ob my OG Pixel XL. I had this issue with the 6P and it was later fixed with an update.
It could just be carrier issues in my area too I guess...

Mine works fine.

You should try Textra. The king of all texting apps

On OG Pixel now. Was really confused when I got it last month. I'm used to making one default APN, but Pixel on Oreo had 5. Is 2 the same? All of my attempts at using advertised Tmob APN broke something. I actually think all 5 APN are needed for VOLTE, WiFi Calling, Messaging over WiFi (IMS), and international roaming. Try the three dots and reset to default.
Also under dialer settings *#*#4636#*#*, phone info, 3 dots, IMS Service Status.....you can check status.
If I deleted those weird APN's it would break IMS.
Sent from my marlin using XDA Labs

IMS:
Sent from my marlin using XDA Labs

IMS Status without my IMEI and phone number...duh:
Sent from my marlin using XDA Labs

Please provide me the details of all the APN fields for the T-Mobile APN I should be using on a Pixel 2 XL. I'm also having issues sending MMS messages and I'd like to verify the APN fields with somebody here who has theirs working. Please let me know, thanks.

El Daddy said:
Is anyone else having issues with MMS not sending or receiving on T-Mobile? I noticed that the APN isn't editable on this phone.
If I switch to airplane mode and back, it will send or receive the stalled message, but will stop working after that.
Any ideas?
Click to expand...
Click to collapse
Did you ever figure out a solution to this? It seems like (from what I read on reddit) that Google Messenger does not like the fact that T-Mobile uses multiple APN settings.
I found if I created a new APN entry with these settings, http://www.4gtricks.com/2017/10/t-mobile-apn-settings-google-pixel-2-XL.html?m=1, that solved the MMS issue. But every time the phone is restarted or the radio toggled with airplane mode, the phone sets itself back to the default APN setting that cannot be edited. That's incredibly annoying.
I then found (from this thread: https://www.reddit.com/r/Android/comments/77c1dj/android_tethering_and_apn_carrier_config/) that if I set the MVNO type in the APN I created to "GID" that the default T-Mobile settings disappeared and only my custom APN was there, so I didn't have it resetting with every restart.
But I'm worried based on what others said here that this may break VOLTE or wifi calling or cause issues with roaming on T-Mobile (if it thinks I'm an MVNO customers). So I'd rather just be able to edit the default APN. Even with root, I can't seem to find any posts about how to do this.
[Edit, I seem to have found a solution (working so far), which I explain here: https://productforums.google.com/d/msg/phone-by-google/RNDSr05hUQ4/GPbYF3GYAgAJ.]

cb474 said:
Did you ever figure out a solution to this? It seems like (from what I read on reddit) that Google Messenger does not like the fact that T-Mobile uses multiple APN settings.
I found if I created a new APN entry with these settings, http://www.4gtricks.com/2017/10/t-mobile-apn-settings-google-pixel-2-XL.html?m=1, that solved the MMS issue. But every time the phone is restarted or the radio toggled with airplane mode, the phone sets itself back to the default APN setting that cannot be edited. That's incredibly annoying.
I then found (from this thread: https://www.reddit.com/r/Android/comments/77c1dj/android_tethering_and_apn_carrier_config/) that if I set the MVNO type in the APN I created to "GID" that the default T-Mobile settings disappeared and only my custom APN was there, so I didn't have it resetting with every restart.
But I'm worried based on what others said here that this may break VOLTE or wifi calling or cause issues with roaming on T-Mobile (if it thinks I'm an MVNO customers). So I'd rather just be able to edit the default APN. Even with root, I can't seem to find any posts about how to do this.
[Edit, I seem to have found a solution (working so far), which I explain here: https://productforums.google.com/d/msg/phone-by-google/RNDSr05hUQ4/GPbYF3GYAgAJ.]
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Thanks for this. Yes, I'm still having problems. I was in a week long conversation with T-Mobile about it and they couldn't figure it out either. At one point they suggested a signal booster (???) The odd part is that it only happens when I'm at work. It works fine everywhere else. The bad part is I get most of my MMS when I'm working...
The only theory I have is that at work we have a series of access points around campus with the same SSID instead of a mesh network. Maybe MMS gets screwed up somehow when jumping across access points.
I will give your suggestion a try and see if it helps.

I found that my mms didn't work because of my router. I have a netduma router and mms doesn't work when I have turbo mode turned on. I have no idea what turbo mode changes about the network but whatever it does, it screws with mms somehow. Maybe your work network does something similar to netduma's turbo mode.

El Daddy said:
Thanks for this. Yes, I'm still having problems. I was in a week long conversation with T-Mobile about it and they couldn't figure it out either. At one point they suggested a signal booster (???) The odd part is that it only happens when I'm at work. It works fine everywhere else. The bad part is I get most of my MMS when I'm working...
The only theory I have is that at work we have a series of access points around campus with the same SSID instead of a mesh network. Maybe MMS gets screwed up somehow when jumping across access points.
I will give your suggestion a try and see if it helps.
Click to expand...
Click to collapse
In the Google Product Forums link I provide there are some other people saying that connecting to certain wifi access points seemed to interfere with their ability to send/recieve MMS. At least one person said it affected MMS even after they disconnected from that access point. And I think some people in that thread, if you read through it, found some solutions. For me, as I explain, also in that thread, my problem did not have to do with wifi and I resolved it by making some changes to my APN settings.

MMS Fix
I have come up with a simple fix! I am fortunate to have access to two Pixel 2s (one XL and one not) and will try this with my wife's (UPDATE: IT WORKS!), but here's the story:
Situation
My wife and I work for the same company and she mainly uses MMS and I don't, but it is happening to both of us after upgrading to Pixel 2s. She has the Pixel 2 and I have the XL. I have done a test where I added my Google Voice number and my wife's number in a group message and tested all sorts of combination of things. Our phone's MMS works on the house Wi-Fi and the mobile network, but not on our work Wi-Fi. I have reset network settings and APN settings back to default, no change. 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 Wi-Fi. I reset my APN settings back to default and it stopped working on my work's Wi-Fi again. 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
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.
Conclusions
The main thing to note about this is that it is the same as the other T-Mobile MMS APN, 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 problems. When the phone/Google Messages consults the APNs, 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. I do not know what makes my company's Wi-Fi different aside from it using EAP authentication and the fact that this problem didn't occur 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. I need to implement this on my wife's phone and if I do not update this post, you should assume it worked (I may just forget to come back).
UPDATE: It works! I followed my own instructions and it works on my wife's Pixel 2 too!
If anyone has a good theory as to wth is going on, please contribute!

dijit4l said:
I have come up with a simple fix! I am fortunate to have access to two Pixel 2s (one XL and one not) and will try this with my wife's, but here's the story:
Situation
My wife and I work for the same company and she mainly uses MMS and I don't, but it is happening to both of us after upgrading to Pixel 2s. She has the Pixel 2 and I have the XL. I have done a test where I added my Google Voice number and my wife's number in a group message and tested all sorts of combination of things. Our phone's MMS works on the house Wi-Fi and the mobile network, but not on our work Wi-Fi. I have reset network settings and APN settings back to default, no change. 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 Wi-Fi. I reset my APN settings back to default and it stopped working on my work's Wi-Fi again. 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
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.
Conclusions
The main thing to note about this is that it is the same as the other T-Mobile MMS APN, 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 problems. When the phone/Google Messages consults the APNs, 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. I do not know what makes my company's Wi-Fi different aside from it using EAP authentication and the fact that this problem didn't occur 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. I need to implement this on my wife's phone and if I do not update this post, you should assume it worked (I may just forget to come back).
If anyone has a good theory as to wth is going on, please contribute!
Click to expand...
Click to collapse
Thanks!
That did the trick for me using Textra. I had been using the setting on there to turn off WiFi when I sent or received MMS, but I don't have to do that anymore.

I had the same problem, a simple reset the default apn and restart the phone worked, no need to add anything.

EMcTx said:
Thanks!
That did the trick for me using Textra. I had been using the setting on there to turn off WiFi when I sent or received MMS, but I don't have to do that anymore.
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Click to collapse
Fantastic!
HigherSensation said:
I had the same problem, a simple reset the default apn and restart the phone worked, no need to add anything.
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Click to collapse
Great! As I mentioned, I had done the same to both phones (actually, even got a different SIM for her phone). Something about being connected to our work's Wi-Fi caused the phones to throw their hands up in the air and refuse to work when no MMS APN with a FQDN was present.