# Cannot Connect Square reader using mobile payments sdk **URL:** \ **Category:** Questions\ **Created:** [May 17, 2026, 6:19am UTC](https://developer.squareup.com/forums/t/cannot-connect-square-reader-using-mobile-payments-sdk/26122 "2026-05-17T06:19:15Z")\ **Posts on this page:** 1\ **Showing post:** 8
**Author:** ![josh-square](https://avatars.discourse-cdn.com/v4/letter/j/77aa72/32.png) [@josh-square](https://developer.squareup.com/forums/u/josh-square)\ **Post date:** [May 28, 2026, 8:16pm UTC](https://developer.squareup.com/forums/t/cannot-connect-square-reader-using-mobile-payments-sdk/26122/8 "2026-05-28T20:16:30Z")
Hey @anikal2001, we had a similar report for this issue (on both iOS and Android) here: > [@Cannot Connect Square Reader using Mobile Payments SDK \[Unable to Establish a Secure Connection to Square\]](https://developer.squareup.com/forums/t/cannot-connect-square-reader-using-mobile-payments-sdk-unable-to-establish-a-secure-connection-to-square/26146/4): > > For those facing the same issue, we have resolved it and it looks like Square Support is on the ball with this one. It just takes a little bit of fine toothing to make sure all the credentials are in the right place. Alright, for iOS, many of us in the past have used older Bundle IDs’ and this has been fine but with (I assume) recent updates to the SDK’s, the Bundle ID for both Android and iOS must be what is on the App Stores. They will usually match if you are using React Native. Ensure that … Can you take a look to see if that helps for your case as well? --- _[View the full topic](https://developer.squareup.com/forums/t/cannot-connect-square-reader-using-mobile-payments-sdk/26122)._