What kind of aux speakers are best for a tiny phone

I've used these for years now. For the price they do well. Subwoofer makes a big difference with the little speakers. It will get pretty loud. They're probably lots of good ones out there. And bad ones too.. hope you find good ones

I have a bluetooth receiver set up on my old analogue amplifier. Into that, I have a pair of JBL Control One's which are excellent bookshelf speakers

Get a better phone first if it's the same phone from the last cellphone post I responded to.

You're limited on hardware just by that last post, which will affect any sound going to external speakers. Not enough memory is just not enough memory for anything. Same can be said about processing speeds.