UrbanX Bluetooth 5.0 Adapter 3.5mm Jack Aux Receiver, 2-in-1 Wireless Transmitter & Receiver for Samsung Galaxy S21 Ultra 5G , Streaming Audio of TV, PC, Speaker, Headphones, Car, Home Stereo - Walmart.com
Official Samsung USB-C To Headphone Jack 3.5mm Aux Adapter - White
Galaxy S21: Samsung didn't bring back the headphone jack and here's why - CNET
Amazon.com: USB C to 3.5mm Cable for Samsung S21 Ultra, COOYA 6.6FT USB C to Aux Male Headphone Audio Cord Car Stereo Auxiliary Cable for Samsung Galaxy S21 Plus S20 FE 5G
Amazon.com: APETOO USB C to 3.5mm Audio Aux Jack Cable for Samsung S21 Ultra, Type C Aux Adapter to 3.5mm Headphone Stereo Cord Car for Galaxy S22 Ultra S20 S21 FE Note
For Samsung Galaxy S20 S21 S22 Aux Cable USB-C to 3.5mm Audio Cord Car Stereo | eBay
Mini Bluetooth Receiver For Samsung Galaxy S21 5G , Wireless To 3.5mm Jack Hands-Free Car Kit 3.5mm Audio Jack w/ LED Button Indicator for Audio Stereo System Headphone Speaker - Walmart.com
No, the Galaxy S21 series doesn't have a headphone jack - SamMobile
Usb Type C To 3.5mm Aux Adapter Type-c 3 5 Jack Audio Cable Original Samsung Galaxy S23 S22 S21 Ultra S20 Note 20 10 Plus Tab S7 - AliExpress
Does the Galaxy S21 have a headphone jack?
Amazon.com: USB C to 3.5mm Female Headphone Jack Adapter(2 Packs),LERTOSEN USB Type C to Aux Audio Dongle Cable Cord Hi-Fi DAC Chip for Samsung Galaxy S22 S21 S20 Ultra S20+ Note 20
Official Black Ultra AKG USB Type-C Wired Earphones - For Samsung S21 Ultra