You could try using a different texting app and/or revoking the Samsung Messages' app's photo permissions to be safe. "My phone's battery was super low overnight so maximum power saving had kicked in from a routine I set with Good Lock, and two or three people had been sent photos (just one each, and they were photos I had sent them in the past)".
Some Samsung users are complaining that their smartphones randomly sent photos and scheduled texts to contacts. The problem was first reported by Gizmodo, and users have pointed out how their Samsung phone sent all photos from the phone's gallery to other users. It may be related to a recent T-Mobile profile update to the new RCS text-messaging format. "However, there was record of it [in my] T-Mobile logs". RCS improves the legacy SMS protocol with additional features such as read reports, media sharing and more. In some cases, users reported the phone sending out normal photos, while in others the phone grabbed emojis and other image resources from the phone's storage.
Samsung has acknowledged the issue in a statement released to United States outlets such as The Washington Post: "We are aware of the reports regarding this matter and our technical teams are looking into it".
Samsung phone owners: Think of the most revealing photo stored in the photo library on your smartphone.
Samsung is aware of the issue and is working to resolve the problem.More news: Panos Panay fingers LG Display as screen supplier for the Surface Phone
Affected users are encouraged to contact Samsung directly until a fix is issued.
There are now two fixes if you are anxious about the issue affecting your device.
Samsung says it is investigating the issue, which may be caused by an update to the texting app Samsung Messages.
If you're using Samsung's Messages software, and are anxious about unapproved picture texts, find the application in the apps section of your device's settings, then go into its permissions, and disable access to storage.