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The S7 is a huge problem when using unlocked on another provider. Carriers have say in what happens in the OS, and a lot will put little funky things that "lock" some features to them even though the phone can be unlocked. MMS is usually a problem with the S7s.
There's been some threads where folks said they got things to work. Here's a good thread about the Verizon S7: Problem switching from Verizon to T-mobile. S7 Edge Resolution APN Settings.
Having the same issue here No MMS after switching Verizon Galaxy Note 5 to T-Mobile. After reading this thread what is the answer to this issue
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Hey there! Sorry to read you're having trouble getting your S7 to cooperate with the network! Were you able to find any helpful steps in the thread that Smply linked above? When it comes to non-TMO devices; we're able to offer support with our Bring your own device (BYOD) guide but ultimately, we're not able to guarantee full network compatibility -- our Non-T-Mobile phone & software disclaimer explains that in a bit more depth. We do want you to be able to get this working rather than see you go, though! IIRC, one recommendation that seems to be pretty popular in the threads we have about these issues is to ensure that you're deleting the existing APN profile before adding the new settings in. I can dig for more threads for you if you're still looking for help -- please let us know!
I need help deleting the existing APN
profile and adding the new settings in.
Can you please help???
I've experienced the same thing, but you can give this settings a try, please note to copy the correct MMSC and the APN type.
Proxy: Not set
Port: Not set
Username: Not set
Password: Not set
Server: Not set
Multimedia message proxy: Not set
Multimedia message port: Not set
Authentication type: Not set
APN type: default,supl,mms
APN protocol: IPv6
APN roaming protocol: IPv4
Turn APN on/off: APN turned on (this is grayed out)
Mobile virtual network operator type: None
Mobile virtual network operator value: Not set (this is grayed out)
then on network mode , please make sure it is set to LTE/GSM/UMTS
This worked great for me (IE: switching an S7 edge to t-mobile), thank you much sir/madam
This also worked for my phone (Verizon Galaxy S7) - Yay! I had to do a factory reset because of a virus and also because the phone had been beyond slow for a long time. I worked on it for days and days and days and took it to T-Mobile and Verizon with no luck. I finally ran across a similar post and it worked! The only differences on mine are that my user name and password are automatically filled in (and I left it that way) and Authentication Type: is set to None. But I finally have MMS back! Why couldn't the T-Mobile people have known this? Oh, the hours I've spent.....
Happy to report that after hours of troubleshooting, I got MMS to work on the Galaxy S7 that I brought over last week from Verizon. I had matched up the Access Point settings with the post from magentatechexpert, but with no luck. At least I thought I had them matched up. After hours of staring, I found the MMSC address on my phone didn't match the address from the post.
It should be this:
On my device, the MMSC was automatically filled in as this:
Note the missing "msg" between "mms" and "eng.t-mobile". Once I corrected the address, I was able to send MMS.
Spelling this out here in case it's the problem for anyone else, because it's so easy to overlook. That especially goes for you, fishgill8. Funny (not a good funny) thing to find someone else chasing the same problem on the same day as me.
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