Image attached to SMS can't be viewed

Any kind of image or just a particular image? Try this simple image and let me know.

Same result. I see the message, but can't see the image. Here is the response I get when I send the message:

{

"uri" : "https://platform.devtest.ringcentral.com/restapi/v1.0/account/296240004/extension/296240004/message-store/9648411004",

"id" : 9648411004,

"to" : [ {

"phoneNumber" : "+1(a valid phone #)"

} ],

"from" : {

"phoneNumber" : "+1(my sandbox phone #)",

"name" : "Barney Stone",

"location" : "Los Angeles, CA"

},

"type" : "SMS",

"creationTime" : "2021-06-14T19:36:43.000Z",

"readStatus" : "Read",

"priority" : "Normal",

"attachments" : [ {

"id" : 9648411004,

"uri" : "https://platform.devtest.ringcentral.com/restapi/v1.0/account/296240004/extension/296240004/message-store/9648411004/content/9648411004",

"type" : "Text",

"contentType" : "text/plain"

}, {

"id" : 2368032004,

"uri" : "https://media.devtest.ringcentral.com/restapi/v1.0/account/296240004/extension/296240004/message-store/9648411004/content/2368032004",

"type" : "MmsAttachment",

"contentType" : "image/jpeg",

"size" : 8170,

"fileName" : "test.jpg"

} ],

"direction" : "Outbound",

"availability" : "Alive",

"subject" : "Test SMS using a RingCentral Developer account - Test with image",

"messageStatus" : "Queued",

"smsSendingAttemptsCount" : 1,

"conversationId" : 4887734925872257461,

"conversation" : {

"id" : "4887734925872257461",

"uri" : "https://platform.devtest.ringcentral.com/restapi/v1.0/conversation/4887734925872257461"

},

"lastModifiedTime" : "2021-06-14T19:36:43.893Z"

}

So the recipient number is your mobile number and on iPhone and tablet? Can you send a test MMS from the RingCentral soft phone?

This works normally for others, so you need to try several ways to see what could be the root cause.

What is a soft phone? I can't find any reference to it in the developer documentation.

https://support.ringcentral.com/download.html

Scroll to the "RC Phone - Desktop" and select the appropriate platform to download.

Switch to the "sandbox mode" before logging in the app:

MacOS: press “fn + command + f2” keys

Windows: press “Ctrl + F2” keys