Why is my POS app freezing and delaying during checkout?

Topic summary

Multiple users are experiencing severe freezing and delays in their POS app during checkout and scanning operations, affecting business operations across different devices and locations.

Key Issues Reported:

  • App freezing during scanning and checkout processes
  • Bluetooth scanner connectivity failures on new Android tablets
  • Problems persist even on brand-new hardware
  • Affecting both Android tablets and multiple iPads across different store locations

Impact:

  • One retailer forced to close doors for several hours
  • Unable to process payments or manage inventory during outages

Troubleshooting Attempts:

  • Shopify Support has investigated twice without resolution
  • Suggested enabling “Allow Cross-Website Tracking” in app settings, but this produced no improvement
  • Issue persists despite trying multiple devices and scanners

Status: Unresolved - users seeking solutions from community as official support has not fixed the problem.

Summarized with AI on October 24. AI used: claude-sonnet-4-5-20250929.

Has anyone experienced their POS app delaying and freezing during scanning and checking out? I am using an Android tablet. Purchased a brand new one this morning. Loaded the app, same issues. Now, it will not recognize the Bluetooth scanner on the new tablet and I have tried two of them. The Shopify advisors have looked at this issue twice now with no fix. We had to close the doors today for a few hours until we could figure out how to accept a payment and manage our inventory.

We are also experiencing this. Shopify Support suggested Allow Cross-Website Tracking in the app settings but it’s made no difference. We’re experiencing this on multiple iPads at multiple locations.