I have an iPhone 8 Plus and usually have no issues. This morning I get a text from my landlord of all people upset because I had “texted him at 3:45 in the morning”!!!!! My iPhone and Apple Watch showed nothing from me to him in two days and he was the last one to reply. He sent me a screenshot and apparently there is a photo/Live Photo of a black screen with random colors moving around sent from my number...... my iPhone was on a flat surface charging at the time and I sent nothing. After I apologized up and down now I just want to know why this would happen and how I can prevent it from happening again? Thank you!