Please help! I've gone through the DIY MMS settings changes, restarted phone, etc. I have an unlocked Samsung Galaxy S21 Ultra. My sister can receive MMS from me, but my best friend can't.
Userlevel 7
+14
What type of phone does your friend have? If it's an iPhone then that may the issue.
Userlevel 7
+15
Did you setup the device with your SIM in it.or with no SIM in it? Setting up the device without a SIM during the setup prevents the device from downloading all of the correct APN and IMS information.
Set up WITH T-Mobile SIM, and her phone is an Android.
Userlevel 7
+15
Can you double check the APN and SMS/MMS settings listed here?
Everything is grayed out so I am unable to edit anything.
Userlevel 6
+12
Which messages app are you using? From my understanding Google has been handing off to carriers for RCS and interloping between carriers isn’t completed. You may need to turn on backup to SMS for it to work.
If you use Samsungs version then I believe there is no setting and should do it by default.
Userlevel 7
+14
It's epc.tmobile.com but it's for non LTE phones.
Userlevel 7
+15
If.you are using Samsung Messages. Make sure you are updating it from the Galaxy Store. There are version differences from the Play Store version. Samsung Messages has also been plagued with a lot of annoying issues lately. Especially if you have RCS enabled.
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