MMS messages backed up with incorrect sender (myself instead of actual sender).

[JC3]

When MMS messages are backed up, the sender and recipient seem to be swapped. Messages sent to me appear to come from me, and vice versa. Most significantly, for messages sent to me, there's no record in the headers or subject line of the original sender's name / number. Non-MMS messages work fine.

Expected behaviour

MMS messages, when backed up to gmail, contain the original sender of the message in the from field and X-smssync-address header. For messages sent to me, this means the other person. For messages I send, this means me.

Actual behaviour

MMS messages, when backed up to gmail, contain the recipient phone number in the from field and X-smssync-address header (and sometimes contain my own name in the subject line for messages sent to me). For incoming messages, no information about the actual message sender is present. For outgoing messages, they appear to come from the receiver.

Steps to reproduce the behaviour

Have somebody send you an MMS, and make sure it gets backed up. Also, send somebody an MMS, and make sure it gets backed up.

Please specify the following:

• Android version: 7.1.2
• Phone model / brand: Kyocera DuraForce Pro
• SMS Backup+ version installed: 1.5.11 (latest from Play Store)
• Messaging app: Verizon Message+

[JC3]

Updated: Actually, sender and recipient appear swapped always, it's not just incoming messages. Outgoing messages appear as if they were sent to me.

[kurahaupo]

Known issue, added to FAQ, thanks.