One user on Reddit said his girlfriend received a message with his phone's entire photo library, but the phone itself showed no such message being sent.
Heads up if you're a Samsung user - some phones have started randomly texting your photos without your permission.
Users posted complaints on Reddit and Samsung's support forums about a odd issue that appears to be silently sending photos to random contacts. However, there was record of it on Tmobile logs. The issue appears to be linked to the Samsung messages update.
Reddit user Moosan said something similar had happened to them.
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Multiple people stated there was no evidence on their phone of the error, they only learned of it when the recipient told them.
Redditors were quick to point out that most affected phones so far seem to be on T-Mobile, which has recently been upgrading users to the Google-backed RCS "advanced messaging".
Samsung sent a statement to Gizmodo, stating, "We are aware of the reports regarding this matter and our technical teams are looking into it. We encourage any customers who may have questions or concerns to contact their local Customer Service center at 1-800-SAMSUNG".