It kind of depends.
have you purchased any movies; books or music with your phone?

if you have than you need to get a tablet within whatever brand of phone you have cuz you will not be able to transfer your purchases from one brand to another.
for example i have an Apple iPad that ive purchased a lot of movies an books an some music on over a course of 9+years. i will not be able to transfer any of my purchases from my Apple iPad onto an Amazon Fire. but i can buy another Apple iPad(or whatever Apple product) an transfer my purchases cuz its the same brand an account. i am assuming its the same for all tablet an smart phones regardless of brand.

other than that i dont think you can go wrong with whatever kind of tablet you get. they are handy gadgets to have! im all the time stuffing my iPad into my small backpack an using it around town while i wait for whatever to be finished(i had a couple of super long waits at Les Schwab for example) an was super glad i took my iPad with me