Ensure you are using a high-quality power source; inadequate power from a weak USB port can cause the modem to reboot or drop connections. :

If the modem is recognized but shows "No Internet," you likely need to manually set the for your specific carrier.

Xidol K5188 is designed as a plug-and-play device, meaning it typically contains its own drivers and management software that auto-installs when first connected to a PC. If the automatic setup fails or the modem is not detected, follow this guide to fix the connection and set up the device properly. 1. Basic Hardware Fixes SIM Card Check: