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Messages suddenly fail to send to specific contacts (one-way communication issue) #886
Description
Checklist
- I can reproduce the bug with the latest version given here.
- I made sure that there are no existing issues - open or closed - to which I could contribute my information.
- I made sure that there are no existing discussions - open or closed - to which I could contribute my information.
- I have read the FAQs inside the app (Menu -> About -> FAQs) and my problem isn't listed.
- I have taken the time to fill in all the required details. I understand that the bug report will be dismissed otherwise.
- This issue contains only one bug.
- I have read and understood the contribution guidelines.
Affected app version
1.9.1
Affected Android/Custom ROM version
Android 13
Affected device model
Galaxy S10 Lite
How did you install the app?
F-Droid / IzzyOnDroid
Steps to reproduce the bug
At some point, the app completely loses the ability to send SMS/MMS messages to specific contacts. When attempting to send a message, it fails, but I can still receive incoming messages from those exact contacts without any issues (one-way communication).
Expected behavior
Messages should be sent and delivered successfully to all contacts, as long as the network connection is stable and incoming traffic works.
Actual behavior
- Open a conversation with a specific contact.
- Type a message and hit send.
- The message fails to deliver.
- Have the same contact send a message to me — their message is received successfully.
Screenshots/Screen recordings
No response
Additional information
No response
Activity
seiferflo commentedon Oct 6, 2026
Same here. An MMS usually triggers it, and then my messages get stuck on "Sending..." indefinitely.
One Plus 15 Oxyen OS 16 (Android 16)
kennethd commentedon Oct 6, 2026
Not sure if this is the same issue, but I have a moto g 2026 w/Android 16 & Messages 1.9.1 installed via f-droid & one contact seems to have stopped receiving MMS messages only, but still gets SMS (that's my theory, she doesn't get longer messages). I believe she uses an iPhone. I tested it with an android user and both images & long MMS texts come through for the android user. I use T-Mobile. My phone performed some sort of update a few days ago which may or may not be relevant, but correlates with the time this behavior started.
@seiferflo Regarding the "Sending..." thing, when that happens I find that when I exit the chat (returning to the contacts list) and re-enter the chat it will send
seiferflo commentedon Oct 8, 2026
@kennethd Yes, this matches what I observed. I'm not sure if subsequent MMS messages are completely blocked by that contact, but when SMS and MMS are sent together, even a few seconds apart, neither goes through. A couple of days later, SMS works fine again. However, the initial batch of SMS/MMS messages is never received.