how can I redirect mp3 music to portable speakers?

how can I redirect mp3 music to portable speakers?

plug them in to the headphone port?

Or if they connect over Bluetooth, pair and connect the speakers to the phone. Music should automatically play over BT-connected speakers. If not, play your music, open the menu and choose Activate (BT speakers name). Or it will be something similar to that.

Take your pb to the store when you shop for blue-toot speakers.