If you're having issues connecting Cosmos Laser to Wi-Fi, try the following:
1. Update the firmware of the 4K dongle and Cosmos Laser to the latest version:
- Press the Settings button on the remote and select Settings > Device Preferences > About > System Update.
- Press the Settings button on the remote and select Settings > Device Preferences > About > Projector Firmware Update.
2. Try your phone's personal hotspot.
3. Try your router's 2.4G and 5G settings.