According to Gizmodo, some Samsung users have reported a bug that sends their images to random people in their contacts without their permission. On Samsung's Galaxy S9 support board, a user said Samsung Messages became buggy after an T-Mobile RCS/advanced messaging update on his phone.
The affected devices appear to be exclusive to the most recent Galaxy S9 and Galaxy S9 Plus, and it's unclear whether other models are affected.
The complaints have gained some traction on Reddit, in sections dedicated exclusively to Samsung phones.
This can be done by going to Settings - Apps - Samsung Messages - Permissions - Storage.
Samsung said: "We are aware of the reports regarding this matter and our technical teams are looking into it".
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Affected individuals say their phones have started sending messages to one of their contacts with their full photo gallery.
Users have theorised that the problems could be caused by the rollout of Rich Communications Service (RCS) on certain carriers in the US. Basically, a photo can be sent to a complete stranger and users have no idea what happened. "I think it has something to do with the Samsung SMS app being updated from the Galaxy Store". You will have full texting capabilities and you don't have to look back, in case Samsung lost your trust forever.
The Galaxy S9 user said their scheduled messages are being sent "prematurely", scheduled text messages "end up in the WRONG threads", and the Messages app "incorrectly displays scheduled messages as "sent" when, in fact, the other party has not received them".
Samsung is now urging concerned customers to call its support lines directly.