Use a certified OTG cable or OTG adapter. Low-quality adapters may cause connection issues even if the device supports OTG.

Enable OTG mode if your phone requires it (common on some Xiaomi, OnePlus, Vivo, and Huawei models). This option is usually found in:

• Settings → Additional Settings → OTG
• Settings → Connected Devices → OTG

Ensure your device battery level is above 20%. Some smartphones disable OTG when the battery is low.

Remove any USB hubs. Connect the OTG cable directly to avoid compatibility issues.

Once OTG functionality is confirmed and properly enabled, you can proceed with connecting your Omnicomm equipment and configuring it through the Android version of Omnicomm Configurator.