Some recent leaks have raised the possibility of a successor for the Samsung Galaxy M30s. Now, the OEM has certified a battery that could conceivably have been made for this phone. However, those hoping for even more screen-on time between charges may be slightly disappointed in its specs.
https://www.notebookcheck.net/TUV-Rheinland-certifies-a-new-battery-that-may-be-for-the-Samsung-Galaxy-M31s.477145.0.html