Samsung i9 100 SMS is coming. What's the problem with sound but no screen prompt?

As for the problem you mentioned, in my opinion, is it caused by the lack of memory in the mobile phone? You can delete some unused things and have a look. If it still doesn't work, I suggest you find a master! For factory settings and brushing, it is best to ask clearly before considering. A little stupid advice, I hope it will help you! I'm happy to answer your questions!