I have implemented the ios react native plugin for the Square Mobile Payment SDK and am currently using a production App ID. While attempting to connect the Square Reader through the Square settings screen, I receive a “Reader pairing successful” message; however, it is followed by the error: “Read…

:waving_hand: I’m Square Dev AI, here to help answer your question! Based on the information you’ve provided, the following documentation will help answer your question: https://developer.squareup.com/docs/reader-sdk/react-native https://developer.squareup.com/docs/reader-sdk/cookbook/contactless…

@anikal2001 Thanks for providing all those details here! I’ve escalated this to the team.

@anikal2001 Are you able to verify that you have the correct app signature for the build you have installed?

[image] josh-square: Are you able to verify that you have the correct app signature for the build you have installed? Yes, i believe the app signature is correct

@anikal2001 The behavior you’re seeing really only happens when there’s an issue with the app signature. For context, it’s possible for each build you generate to have a different app signature, so you’ll need to make sure that your app signature being generated is the same across all debug and rele…

Hey @anikal2001 , we had a similar report for this issue (on both iOS and Android) here: [image] Cannot Connect Square Reader using Mobile Payments SDK [Unable to Establish a Secure Connection to Square] Questions For those facing the same issue, we have resolv…

Cannot Connect Square reader using mobile payments sdk

Questions

josh-square May 28, 2026, 8:16pm 8

Hey @anikal2001, we had a similar report for this issue (on both iOS and Android) here:

Can you take a look to see if that helps for your case as well?

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Cannot Connect Square Reader using Mobile Payments SDK [Unable to Establish a Secure Connection to Square] Questions mobile-payments-sdk	3	69	May 21, 2026
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Cannot Connect Square reader using mobile payments sdk

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