No phone is needed with this TF compatible Bluetooth speaker

Tronsmart Trip 10W TF Card Slot, Dual-fan Cooling

a better visual experience + Supports hands-free calls + With TF card slot, can play MP3

tf slot TL;DR: Bring the music and a light show anywhere when you get a this Bluetooth speaker with an LED base compatible with TF cards and USB

tft best in slot items *Additional HDD slot not available on 90Wh battery models Video Playback: Testing is done with Wi-FiBluetooth off, Windows Power Plan