Hi and Welcome. My Name is ***** ***** I look forward to assisting you today with your question.
What is the model and make of your phone ? Are you seeing this message on internet app ?
It is possible that your phone is infected with some kind of malware. Download Malwarebytes AntiMalware from Play Store. Run it and does it find anything ?
What is the exact message you are getting?
Lily, if it is very late in there then we can continue tomorrow. This question will not be closed. Add a bookmark of this page or add this page to your favorites, so you can get back to me tomorrow morning or any time.
It is hard to contact Samsung via email. I will help you. We may need to factory reset the phone and setup as new. What is the exact message you are getting?
That will help me to identify the problem
It should stay there until you tap on the screen. Note it down and let me know.
May be that worked. If it appears again, please reply back here and we can fix it.