# Troubleshooting with the PAX D135 Sample App

If you encounter issues with a PAX D135 while using the SDK, contact the Finix Support Team at [support@finix.com](mailto:support@finix.com).

Before reaching out, follow the steps below to send debug logs from the sample app.

Alternatively, you can collect logs programmatically. See the **Troubleshooting** section in the [Android quickstart](/guides/in-person-payments/building-your-integration/mobile-integration/pax_d135_android_quickstart) or [iOS quickstart](/guides/in-person-payments/building-your-integration/mobile-integration/pax_d135_ios_quickstart).

## Step 1: Launch the Finix D135 sample app

Finix iOS D135 sample app home screen
## Step 2: Connect to the PAX D135

Finix iOS D135 sample app showing a connected device
## Step 3: Tap **Send Debug Data**

Finix iOS D135 sample app showing the Send Debug Data option