I came across the app CleanMaster when I suddenly had no space for new pictures during my holiday in Barcelona. You have to say that I had already taken several thousand pictures (of course already before the holiday).
In any case, I did not want to part with any picture and came across the App Clean Master while researching on the Internet. This simply erases the data automatically stored by my smartphone on a regular basis, so it clears the cache, which was a considerable amount of MB over time. So I had some memory more for new pictures and my Galaxy seemed to run a bit faster again. :
Link to the app: https://play.google.com/store/apps/details?id=com.cleanmaster.mguard&hl=de
Submitted by Saskia Träxler