The image represents water detected.
Edit for clarity If you search online for “How to charge your phone if it displays a water drop icon” you are likely to find the Samsung U-tube video quite a few workarounds containing a structured approach to solving the problem to. We did see this on a family phone and it it was solved following the “gentle first” guidelines went away, don’t remember what the final solution was. This is the Official Samsung (UK) support link.