Like all Samsung S phones there are always a few bugs to be worked out. Irritating little things but not really serious. Some of the minor bugs on my Samsung S9 I have figured out how to resolve but my old (2013) Galaxy S3 occasionally gets weird bugs that I don't know where they come from or why or how to get rid of them. Irritating little annoyances, like my S3 has started popping up a "Server Error" message for no apparent reason since everything seems to be working. Seems like it had this problem once before years ago and I got rid of it but now I don't remember how I did it. I'll try a reboot and see if that helps. And yes, of course I know that support for the S3 ended years ago but it still gets Internet and has a real nice camera so I use it as a backup. I don't have phone service on it though.