The 3.5mm plug is a standard 3 pole (2 rings and a tip) connector, This won't work on a Smartphone that has a 4 Pole TRRS port. You may need a TRS to TRRS adapter. These 3.5mm to XLR Cables are Designed to Split a 3.5mm Aux Balanced / Stereo output Signal into two Unbalanced / Mono XLR input Signals (Left and Right Channels), They are ideal for connecting your Smartphone/ PC / Laptop to a Mixer/Speakers or similar device.
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