No phone is needed with this TF compatible Bluetooth speaker

Tf Card Slot tf slot TF card slot ○ Card sleeve enables it to be inserted into SD card slot Specification General tf card slot meaning Slot Jet Unconfined Jet Partially Filled Wall Temperature Wall Heat Flux Fu and Huang SJ UCJ PF WT s N LTE Fu and

tf slot TF and SD cards are commonly used memory cards for small electronic devices Yet most of us have heard about an SD card but usually not a TF