Updated: March 13, 2023
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by Viktoriia Yushkevych
Tech Expert & Writer
375 resolved issues
Verified Expert in:
Smartphones, Tablets, Gadgets, Apps

Developer Options Not Supported keeps showing, but I've changed it, but card reader still won't pair

author

Hello, thank you for using Howly. I’ll be happy to help you out! May I ask your name?

Customer Replay

*****

author

Nice to meet you, *****!
Please describe your request with as many details as possible for me to get the whole picture of the situation.

Customer Replay

I've updated developer options, but I can't pair my card reader

author

May I know, what card reader are you using?
Is there a brand and model?

Customer Replay

I've had it for years. It's the classic square with chip and pin and contactless facility

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author

Noted, thank you
And are you trying to pair it with your phone?

Customer Replay

My Samsung S21 smart phone

image

author


May I know, is this the first time you are pairing this card reader with this specific phone?

Customer Replay

Yes. I upgeaded to a different phone

author

Understood
Have you tried to turn off your Bluetooth and then turn it on?

Customer Replay

Yes

banner 6
author

I see
Press the button on your Square Reader once to see the battery level.
Could you please tell me what lights do you see?

Customer Replay

3 green lights

author

Great, thank you
Please reset your square reader.
Hold down the power button for approximately 20 seconds. The lights on your reader will flash orange, then red, and then they will stop flashing. Do not let go of the power button until after the red lights have stopped flashing.

Customer Replay

I will do that now

author

Thank you
Please keep me posted

Customer Replay

Done

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author

Still nothing?

Customer Replay

Shall I try to pair it again?

Customer Replay

I'll keep you posted

author

Great, thank you

Customer Replay

Yes. Just finished, but it still says Developer Options not Supported
Developer Options Not Supported keeps showing, but I've changed it, but card reader still won't pair. I've reinstalled the app, restarted phone & card reader

author

Do you try to disable Developer Options in settings?

Customer Replay

I will do that now

Customer Replay

It's working!

author

Great to hear that

Customer Replay

Thank you so much. You were so patient

author

Please feel free to contact us at any time. We'll be happy to help you. Have a nice one!

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375 resolved issues
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