Samsung Galaxy what? There are phones called Galaxy and tablets called Galaxy. But it are different devices.
I'd start with only carrying a phone and see what functionality you're missing.
I have an old, very basic Dell PC, (about 4 yrs. old--Vista Home Basic...very simple) just purchased a Samsung Chromebook, and a Samsung Galaxy Reverb (From Virgin Mobile for only $99.00--Thank you, CNET.), I have an old Kindle, and recevied a Kindle Fire HD for Christmas. How do I coordinate all of these devices? It seems they all duplicate each other in some ways. What do I need to carry with me at all times? How do I save my photos in a safe, safe place? Cloud? Amazon Cloud? Google Cloud? Are they the same thing? HELP--I'm a novice, and I'm 66 yrs. old, but I'm having fun!