Thank you for providing us with the additional info.
The Multimedia Messaging Service (MMS) uses the data channel to send/receive picture/video messages. So we must turn the data on the device to send/receive picture/video messages. For regular text messages (SMS), you don’t need the data to be on.
Since you have don’t have the data plan, unless the device connects to WiFi, it can’t send/receive an MMS message. I hope this helps.
Thanks again for a reply! However your response isn't entirely correct:
Yes data on the device has to be turned on to send/receive picture/video messages. However, even though we do not have a data plan the device IS still actually able to send/receive mms messages WITHOUT being connected to wifi, it's always been this way. The messages we have had trouble sending/receiving are a mix of MMS and SMS messages.
An update however, today I called tech support and the associate at Rogers asked us to shut down the phones for a few minutes while he reset/updated something. So far so good today as everything's gone through as expected. Hopefully whatever he did solved the problem.
I'll try to post an update after a few days/weeks here to see if everything's back to normal.
Thanks for reaching out to the tech support and for updating our Community.
The MMS messages must need a data channel to send/receive, as we established earlier. So when there is no cellular data available, the MMS messages should not work until the device connects to a WiFi network. However, if you can send/receive MMS messages without a WiFi connection, then it’s intriguing.
As for SMS, if they don’t work until the device connects to a WiFi network means the RCS features are in use on the device. The RCS also needs WiFi or data to work.
STILL and issue..., I have a Note 9, MMS worked fine on wifi with data off...now, just a week ago I combined accounts (only) "upgraded" to a new more expensive data plan and WOW...so many issues...from no text (sms or MMS) to just sms data on, wifi on or off..now no mms with wifi..only data...so let me get this straight before spending yet another infinite black hole worth of time waiting/speaking with Rogers (actually the techs always seem to be pretty good...csrs on the other hand...whoa!)
Hi, just a quick update. Knock on wood things seem to be working a lot better lately. I still ran into one of my texts not sending yesterday, bit for the most part they are working. Picture messaging is working as it normally doesv also.
Just a note on the sending/receiving pictures without a data plan. It technically does use "data", however because we don't have a data plan but we do have picture messages included in our plan we don't get charged the data. I'm not sure how it's still managed on a technical level.
Mein thing is that you just have to have cellular data turned on on your phone. Wifi doesn't make a difference