[GH-ISSUE #1078] Does not Backup any MMS messages #863

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opened 2026-02-26 01:32:09 +03:00 by kerem · 1 comment

kerem commented

2026-02-26 01:32:09 +03:00

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Originally created by @saymahub on GitHub (Apr 19, 2022).
Original GitHub issue: https://github.com/jberkel/sms-backup-plus/issues/1078

Expected behaviour

Backs up MMS messages and attachments into gmail logs

Actual behaviour

Only backs up SMS message

Steps to reproduce the behaviour

As indicated in the screenshot, I selected MMS messages, attampted a backup, and found that there were no messages to backup for some reason, despite the majority of my recent texts being mms.

Please specify the following:

Android version - 10
Phone model / brand - Samsung Galaxy S9
SMS Backup+ version installed - 1.5.11
Messaging app - built in messaging app

Originally created by @saymahub on GitHub (Apr 19, 2022). Original GitHub issue: https://github.com/jberkel/sms-backup-plus/issues/1078 ### Expected behaviour Backs up MMS messages and attachments into gmail logs ### Actual behaviour Only backs up SMS message ### Steps to reproduce the behaviour ![Screenshot_20220419-140707_SMS Backup+](https://user-images.githubusercontent.com/101443517/164087772-8cc89856-811d-4b43-a626-9a6a2b234cd7.jpg) ![Screenshot_20220419-140730_SMS Backup+](https://user-images.githubusercontent.com/101443517/164087777-ec0fc186-117e-4655-b2c4-2733ba9929e3.jpg) As indicated in the screenshot, I selected MMS messages, attampted a backup, and found that there were no messages to backup for some reason, despite the majority of my recent texts being mms. ### Please specify the following: * Android version - 10 * Phone model / brand - Samsung Galaxy S9 * SMS Backup+ version installed - 1.5.11 * Messaging app - built in messaging app

kerem added the

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2026-02-26 01:32:09 +03:00

kerem commented

2026-02-26 01:32:10 +03:00

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@kurahaupo commented on GitHub (Sep 5, 2022):

It's likely that what appear to be MMS messages are in fact RCS messages.

Does your messaging app have any way to check the "technical details" of a message to see which transfer protocol it used?

Background

RCS is a new protocol that provides the same features as MMS, but uses completely different mechanisms: instead of using telco "channels", and insanely expensive Telco-grade store-and-forward, RCS uses end-to-end IP (probably TCP), so it can negotiate features between devices.

But beyond that, there's not much information available. Last I looked (about a year ago), the Android RCS API documentation was available only to telcos - presumably under an NDA - and unusable by any open source project.

Unfortunately RCS vs MMS vs SMS is dictated on a message-by-message basis by the sender; the recipient just has to cope.

@kurahaupo commented on GitHub (Sep 5, 2022): It's likely that what appear to be MMS messages are in fact RCS messages. Does your messaging app have any way to check the "technical details" of a message to see which transfer protocol it used? ## Background RCS is a new protocol that provides the same features as MMS, but uses completely different mechanisms: instead of using telco "channels", and insanely expensive Telco-grade store-and-forward, RCS uses end-to-end IP (probably TCP), so it can negotiate features between devices. But beyond that, there's not much information available. Last I looked (about a year ago), the Android RCS API documentation was [available only to telcos](https://www.xda-developers.com/google-messages-rcs-api-third-party-apps/) - presumably under an NDA - and unusable by any open source project. Unfortunately RCS vs MMS vs SMS is dictated on a message-by-message basis by the sender; the recipient just has to cope.

kerem referenced this issue

2026-02-26 01:32:34 +03:00

[PR #863] [MERGED] Update of FR translation #992