New Samsung 21 5G

[michiganpottery]

I purchased an adapter for my magstripe reader since my new android phone, the Samsung 21 5G does not have a speaker plug in. My phone picks up the reader through the adapter but when I swipe the card I receive an error that reads, "card not charged". 

I cannot figure out why it won't work.

Help?!?

[Gold]

HI, hopefully this Square Support page will help.

https://squareup.com/help/us/en/article/5203-square-magstripe-reader-troubleshooting